Did You Know?
GEOMETRIC DISTORTION AND ADJUSTMENTS FOR NEW SAMSUNG ORCHID CHASSIS DLP
GEOMETRIC DISTORTION AND ADJUSTMENTS ON NEW ORCHID CHASSIS DLP MODELS AFFECTED: HLT5076SX, HLT5676SX & HLT6176SX BACKGROUND: The new HLTXX76-Series DLP is the ultra slim fit designed with the projection mirror on the top of the back cabinet. Due to this design, extra alignment points have been added to the outside of the back cabinet to adjust picture geometry. See attached Service Guide for all info. 76-Series Service Guide Customer complaints of Picture distortion / Geometric issues troubleshooting: Are objects of any weight placed on top of the TV? And, if so, they should be removed. If the picture does not return to normal then perform the Tilt Adjustment in the attached Service Guide. Is the unit on a flat and level surface? If not the cabinet will flex and conform to the environment it is placed in. The picture will bend and distort in this situation. Advise the customer that the entire bottom of the TV needs to be touching a flat level surface to ensure the best picture. If all else fails and you need to adjust the geometry of the TV. 1. To ensure proper adjustment the unit must be placed on a flat / level surface. The unit cannot be half hanging off a TV Stand or Entertainment Center. 2. Connect a generator to the unit and input a LIONHEAD pattern. 3. Enter Service Mode and apply the Test Pattern from the H/V Position Adjustment Item. 4. Make upper and lower screen adjustments per the attached Service Guide. It may be necessary to adjust H/V Position (Svc mode) to ensure proper picture centering. 5. Return the TV to its position in the house and retest picture. – You may have to flex the cabinet after repositioning to obtain best picture. 6. Inform the customer that after cleaning the unit, the cabinet may have to be flexed if they notice the picture distorted again. This is normal. 7. Inform the customer that heavy vibration (such as from an external speaker) could cause the screen / picture to shake. This is normal.
PROGRESSIVE SCAN VERSUS INTERLACED SCAN
I see some TVs are marked \\\'p\\\' or \\\'i\\\'. What does that mean? A \\\" i\\\" stands for interlaced scan, which means every other line of detail on the screen mirrors the one above it. Television screens have traditionally worked this way, which allows for detailed pictures to be drawn quickly, if a little fuzzily. A \\\"p\\\" stands for progressive scan, a newer technology that allows every line to be drawn separately. Thus, a 1080p set will have a clearer picture than a 1080i set. But it will also cost a lot more.
Know Your Connection!!!
The different categories of video connections are composite, component, s-video, dvi-i, hdmi, rgb, and composite video. Composite video (RCA connector) is the lowest grade of video signal used by most video equipment. It is a combined video signal that contains the luminance, hue, and saturation data on a single cable. The typical connector is a single RCA jack with a yellow marking. These jacks are used for most audio/video connections between components. The audio/video jacks are often color coded (yellow for video, red for right audio, and white for left audio). This is also called composite video. Analog Audio is one of the most common transmission formats. Audio analog is used to transfer stereo audio signals only. Hugely versatile, the audio analog interconnect can range from the most affordable entry level to the highest possible quality available, depending on the materials and geometry used in the cables construction. Digital Audio signals are complex and fragile. There are two ways of transmitting the signal. One is a 75-Ohm coaxial cable and the other is optical transmission. 75-Ohm cables are able to transmit digital signals by restricting the impedance to 75-Ohms using precise construction and materials. Optical cables work by transmitting light signals down medical grade light conductive cores. S-Video separates the luminance portion of a video image from the color part. This provides a clearer picture because each portion of the video signal is assigned its own processing channel. The S-Video connector is a Mini-Din 4 Y/C, also known as S-Video Connector. S-Video is primarily used on S-VHS VCRs, satellite dishes (non-HDTV) and DVDs where the target connection, such as your TV set, will not accept component connections. S-Video will run 480i signal, but not a 480p signal. Component Video (RCA connectors) is used primarily on DVD players and HDTV receivers. It is a high-grade video signal that separates the three basic components of a video signal (luminance, hue, saturation). Component video is often displayed as Y, Pb, Pr, or Y, Cb, Cr. The typical connectors are three RCA Jacks with Green, Blue, and Red markings. This system is a component video connection which is capable of accepting full high-definition signals up to 1080i. When you are about to buy a surround sound receiver, make sure it has component video switching. Try to keep your run below 18 feet when purchasing component video cables. . The Y, Pb, Pr jacks allow you to connect a component, such as a DVD player. This connection provides excellent picture quality because the video is separated into three signals. To ensure maximum picture quality, use three video-grade cables for the connection. They are RGB (VGA) Video. All video signals require synchronization of both the horizontal and vertical picture information. Combined synchronization, or “CS” as it is also known, provides both horizontal sync and vertical sync in a single conductor. By keeping the sync separate from the quality picture information provided by the Component Video format, accurate color and timing transfer is achieved. DVI Video (Digital Video Interface) is a specification created by the Digital Display Working Group (DDWG) to accommodate analog and digital monitors with a single connector. It is the highest signal quality available. There are three different DVI configurations: DVI-A, designed for analog signals, DVI-D, designed for digital signals, and DVI-I (integrated), and designed for both analog and digital signals. DVI is an option on many Plasma displays. Because DVI is a new standard, there are presently very few sources except for HDTV and some computers. A DVI connection can also be adapted to feed RGB (VGA) connections. Although, in theory the DVI is the best signal for video it cannot be switched through a surround sound receiver and can be controlled by HDCP. HDMI - (High Definition Multimedia Interface) is the first industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, and A/V receiver, and an audio and/or video monitor, such as a digital television (DTV). HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8-channel digital audio, with bandwidth to spare to accommodate future enhancements and requirements.
HOW TO FIX INTERMITTING DLP SHUTDOWN
TV turns off and 2 out of 3 LEDs are blinking (Standby and Lamp LED). Additionally, the turn off melody is heard. After a few moments the TV reverts to standby mode. The problem appears when the TV is warmed up. The Lamp door safety switch has been forced upward instead of downward. The upward orientation does not provide good conduction, causing intermittent connection. Slight heat expansion causes the lamp door to shift slightly, opening the switch. Remove the lamp door and reinstall it, verifying that the blue switch lever is being forced downward by the lamp door tab.
LAST FIRMWARE REVISION FOR SAMSUNG UNIT
Model: LNS**51D, LNS**52D No. Release Date F/W Version Fix 1 1-Feb-06 2000 First Release 2 3-May-06 2022 On Timer issue 3 27-Jul-06 2029 SA4200HD HDMI issue 4 10-Nov-06 4000 Add AUO Panel Option 5 2-Mar-07 4006 HDMI Image Retention Model: LNS**41D, LNS**92D, LNS3296D No. Release Date F/W Version Fix 1 1-Feb-06 1000 First Release 2 23-Feb-06 1010 DVI no sound 3 3-May-06 1021 On Timer issue 4 27-Jul-06 1028 SA4200HD HDMI Issue 5 10-Nov-06 3000 Add AUO Panel Option 6 3-Jan-07 3005 STB Remote Control Malfunction 7 2-Mar-07 4006 HDMI Image Retention Model: LNS**96D No. Release Date F/W Version Fix 1 6-Jul-06 1000 First Release 2 10-Aug-06 1006 ESPN Channel Problem 3 21-Aug-06 1008 HDMI Flicker at 720P/1080i with DirecTV STB H20-100 4 1-Sep-06 1012 DTV Picture broken 5 20-Nov-06 1016 Star noise at HDMI 1080i input 6 9-Jan-07 1019 Cable card fan off in standby mode 7 6-Feb-07 1022 Just Scan on HDMI 1080i/p input Model: LNS**95D No. Release Date F/W Version Fix 1 1-Jun-06 1000 First Release 2 8-Jul-06 1008 Hang up during Auto Channel Scan 3 10-Aug-06 1012 ESPN Channel Problem 4 22-Aug-06 1013 HDMI Flicker at 720P/1080i with DirecTV STB H20-100 5 1-Sep-06 1017 DTV Picture broken 6 9-Jan-07 1021 Vertical bar noise on Component 1080i 7 6-Feb-07 1024 Just Scan on HDMI 1080i/p input Samsung Tech
HLS AND HLT LIGHT ENGINES ARE LIMITED SUPPLY
Please be advised that effective May 10th, Samsung Electronics will no longer supply the light engine for any 2006 or 2007 DLP models. The light engine must be repaired to component level. In the event that a DLP unit can not be repaired at component level, the following process should be followed to request a light engine from Samsung. Please note that inventory on the light engine is very limited so stock may not be available. 1.)To receive approval to order a DLP light engine, you must first call the Samsung Technical Support Department. When calling, please have available the model number, serial number, version number, detailed symptom of the defect as well as any parts already installed into the defective unit. 2) Technical Support will review your case and approve or reject your request while you are on the phone. If approved, you will be notified of your DLP light engine approval number (#200xxxxxxx) from the Technical Support representative as well as via email.
SAMSUNG IS #1 IN NATION
It’s official. In 2006 more Americans purchased Samsung digital TVs than any other brand. Samsung sold more LCD TVs, more flat tube CRT TVs, and more digital TVs overall, according to the NPD Group, who went on to state: “Samsung is the only television manufacturer that demonstrates market strength in all four digital TV categories….” The NPD report shows Samsung with total Digital TV unit share of 20.0 percent, which is a significant lead on the competition.
SAMSUNG HLS AND HLN SHUTDOWN
The TV intermittently shuts down. The Stand-By and Lamp LED’s are blinking then after several seconds only the Stand-By LED is active. The turn off melody sound is heard during the shutdown process. DETAIL: Improper close position of door switch and thermal expansion of the Door Cover causes shutdown to occur. Remove and reattach the Door Cover to cure the problem. THE SWITCH SHOULD BE IN THE DOWN POSITION. WE PUT A PIECE OF VELCRO IN THE DOOR COVER AT THE INSIDE . WHERE THE SWITCH HITS THE DOOR COVER .IT WORKS GREAT.
Samsung Microwaves
Samsung 2006 and 2007 microwaves have shutdown problems after a minute or two of cooking. This is caused by the fan blade falling off of the motor shaft. Remove the case and use some glue in the blade hole (works great) and reapply. Also these microwaves have a problem with the rf leaking on the magnetron. You will see little dashes on the display when this problem occurs. The unit may shutdown from this problem. The rf is getting to the micro on the front panel. To prove this problem, remove the front panel screw and move the panel sideways to allow the unit to run without shutting down.
SAMSUNG TUBES
If the tech makes an adjustment to the G-2 voltage on the flyback and the focus starts to look misadjusted, the tube is defective.
Sony Blinking Codes
Many of the later model Sony TV’s have a built in Self-Diagnosis function. If the timer/standby indicator is blinking, this could be an indication of the problem with the unit. The diagnostic blinking will occur automatically with no action required by you to engage it. The timing of the blinking you see would be as follows: two to eight blinks (depending on the fault) about a third of a second apart, then pauses for 3 seconds, then the two to eight blinks about a third of a second apart again. Here is a list of the problems that might have occurred indicated by the number of blinks. The words in parentheses are those which you will see for each of these faults on a diagnosis screen described later in this article. Unit is dead and there are no blinks---- Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open). Continuous blink once a second, No pausing as discussed above---- No reply from the jungle IC301 (data bus is busy, shorted to ground or held high), IK video path is defective. One blink---- not used for the self-diagnosis. Two blinks---- B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits. Three Blinks---- B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672. Four Blinks---- No vertical deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505. Five Blinks---- AKB circuit (AKB), the timer/ standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board. Also check Q218, 219, 220 on the A board. Also, unit can be in IK blanking. Try turning up screen slightly. Six blinks---- No horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 and 516 and the jungle IC, IC206. Seven blinks---- High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits. Eight blinks---- Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401 and 402. Intermittent problems?? This is a great feature. You can also bring up these fault codes ON-SCREEN to see a list of the problem numbers with the abbreviation of the problem and the number of times this problem has occurred. This is slightly different then entering the service mode. To see the diagnostic screen, press the following buttons: Display, Channel, 5, Volume Minus, (Not plus), then power. This brings up a screen with a list of problems and number of times they have occurred. Each of the problem names is abbreviated as, “OCP”, “OVP”, “V STOP”, ETC. We have repeated them in parentheses in the text for the “Blinks” described above so you can correlate between the diagnostic screen and the blink codes. So, now that you know about these self-diagnostics, how do you use them? Say that you have a set with a black screen. You see the LED is blinking 4 times…. This would tell you that you have no vertical and that is why the video is muted. If it was blinking 6 times, you would know that you have a horizontal fault. It’s not a sure cure, but it’s a little better than a poke in the eye with a sharp stick. IMPORTANT: After you repair the unit, Please clear the values on this diagnostic screen. These codes do not reset themselves after the fault is corrected, so if you don’t clear them, you’ll be seeing “old” fault codes the next time you enter this screen. Clearing is done by going into the service mode (display, channel, 5, volume plus, then power) then press 8 and ENTER, which of course returns everything to the factory preset condition.
Terms and Definitions
Blemish A blemish is an obstruction, reflection, or refraction of light that is visible, but out of focus in the projected image, under specified conditions of acceptance (in section 3). It is caused by a particle, scratch, or glass defect located in the image illumination path. As such, these artifacts either reflect light, or shadow light. Consequently, blemishes can minor, depending on their intensity on the projected image. Dark pixel A dark pixel is a single pixel or mirror that is non-functional (stuck) in the OFF position. It appears fully dark on a white screen. Note: It is possible for a pixel to appear slightly darker than its neighbors on a white screen, but be fully functional. These are acceptable if viewed on a white screen, and will be judged by the criteria in a section 3. Light pixel A Light pixel is a single pixel or mirror that is non-functional (stuck) in the ON position. It appears fully bright on a black screen. Note: It is possible for a pixel to appear slightly lighter than its neighbors on a black screen, but be fully functional. These are acceptable if viewed on a black screen, and will be judged by the criteria in a section 3 13-2-4. Unstable pixel An unstable pixel is a single pixel or mirror that does not operate in sequence with parameters loaded into memory. The unstable pixel appears to be flickering asynchronously with the image. 13-2-5. Adjacent pixels Adjacent pixels are defined as sharing a common border or common point. A group of more than two adjacent bright, dark, or unstable pixel defects is also referred to as a ˇ®clusterˇŻ defect. 13-2-6. Blue test screen This screen is used to test for Major Dark Blemishes and Dark Pixels. All areas of the screen are colored at a specific blue level, based on a standard 0-255 RGB scale:
A SAMSUNG WARRANTY FACT.
SAMSUNG SEEMS TO EXTEND WARRANTY SERVICE FOR THEIR PRODUCTS OVER THE ONE YEAR PERIOD. THIS IS A FACT!! WITH JUST ABOUT NO TROUBLE AT ALL THE CUSTOMER SERVICE AT SAMSUNG WILL EXTEND THE WARRANTY FOR AN ADDITIONAL THREE MONTHS IF YOUR SET FAILS WITHIN A 15 MONTH PERIOD. THIS IS INFORMATION THAT YOU MAY WANT TO SHARE WITH YOUR CUSTOMERS.
Noise bars in flat panel HDTVs
This is a tip of a lifetime!! Yes, one of the best I have ever known. We are finding problems with moving lines, popping noise in plasma and LCD units. After replacing every board in a Panasonic set, John Pappas (an administrator), found that cable lines are causing this problem. He thinks it is from faulty grounds on the cable lines. This problem does not show up on the analog sets. Using a good video isolation transformer will correct the problem. This is a major problem that is here to stay. This symptom will fool some techs because lines can be seen in other inputs like using a DVD player. If the cable line is unhooked from the set, you will see the problem corrected. Remove the cable line from the set and the line will disappear.
SAMSUNG THERMISTOR UPGRADE
ALOT OF THE TRX SETS HAVE A 1.5 OHM THERMISTOR (PART# 1404-001276). IF THE FUSE IS BLOWN LIGHTLY, THIS IS YOUR PROBLEM. IF THIS HAPPENS UPGRADE THE THERMISTOR TO A 4.5 OHM THERMISTOR (PART# 1404-001154). THIS WILL CORRECT THE PROBLEM.
THE HORIZONTAL OUTPUT FAILURE.
THIS IS ONE OF THE MOST COMMON FAILURES IN A DIRECT VIEW SET. WHAT CAUSES THE OUTPUT TO BLOW IS THE MAJOR PROBLEM FOR THE TECH TO DECIDE. THERE ARE SEVERAL THINGS TO CHECK. FIRST, LOOK FOR ANY CRACKS IN THE SOLDER FROM THE JUNGLE IC TO THE HORIZONTAL OUTPUT ITSELF. THE DRIVE TRANSFORMER IS KNOWN TO HAVE CRACKS AT THE LEADS WHICH WILL STOP THE DRIVE SIGNAL FROM GETTING TO THE OUTPUT AND THEN THE OUTPUT OVERHEATS AND SHORTS. NEXT IS THE B+ VOLTAGE. IF THE B+ VOLTAGE IS TOO HIGH IT WILL SHORT THE OUTPUT . NEXT IS THE TIMING CAPACITORS. NORMALLY WHEN ONE OF THE TIMING CAPS ARE THE CAUSE, IT WILL SHOW UP IN THE PICTURE AS EXPANDED WIDTH OR NARROW WIDTH .BUT IF THE TIMING CAPACITOR IS SHORTED, IT CAN BLOW THE OUTPUT INSTANTLY. NEXT ,THE HORIZONTAL DRIVER COULD BE THE CAUSE, WHICH TODAY VERY SELDOM FAILS. BUT THERE IS ALWAYS A CHANGE. SOMETIMES A LEAKY DRIVER WILL SHOW UP AS LINEAR PROBLEM. NOW FOR THE LAST PIECE OF ADVICE. IF THE SOLDER JOINTS ARE GOOD, THE B+ VOLTAGE IS CORRECT, THE TIMING CAPS CHECK OUT OKAY, REPLACE THE FLYBACK !!!!!!! THIS IS A RULE THAT HAS SERVED ME WELL FOR YEARS. IF ALL LOOKS GOOD AND THE OUTPUT IS BLOWN, REPLACE THE FLYBACK. THIS IS A GENERAL RULE .THERE ARE SETS THAT ARE MORE COMPLICATED AND CIRCUITS LIKE THE PIN CIRCUIT AND IN SOME CASES EVEN THE VERTICAL CIRCUIT CAN PULL DOWN THE HORIZONTAL OUTPUT, BUT NORMALLY THIS RULE WILL SERVE YOU WELL AS IT HAS ME. ALWAYS MAKE SURE YOU USE OEM PARTS FOR ANY SET ABOVE 32\\\".
NEW SUBSTITUTE FOR STK392-110 AND STK392-150
HITACHI IS USING A SUBSTITUTE FOR THE STK392-150 AND STK392-110 WHICH THEY CLAIM IS THE BEST YET. IT IS STK394-160E.
Toshiba HD DVD Taps ADI Technology
Toshiba Corporation has chosen several Analog Devices Inc.\'s (ADI) signal processing solutions to power the video and audio signal chains in what the companies are touting as the industries first hard disk recorder with High-Definition (HD) DVD. The recorder, dubbed the RD-A1 and now available in Japan after weeks of hype in the electronics industry, has 1-terabyte of hard disk space and uses a variety of ADI\'s solutions, including video encoders with noise shaped video processing and 4x oversampling for HD picture quality; amplification technologies; digital-to-analog converters; SHARC processors for multiple formats of DTS and Dolby Labs decoding, up/down-sampling and extensive on-board bass, delay and channel level management; and devices to monitor the temperature of the closely-packed electronics. Toshiba previously tapped ADI by selecting its SHARC processors to power the audio signal chain in its first HD DVD players, the HD-A1 and HD-XA1.
HDTV converter box
Digital-to-analog Converter Box Coupon Program: The National Telecommunications and Information Administration (NTIA) of the U.S. Department of Commerce has released a Notice of Proposed Rulemaking (NPRM) seeking comment on ways to implement the digital-to-analog converter box coupon program pursuant to the Digital Television Transition and Public Safety Act of 2005.