Made some voltage measurement standby and unit on. The tv turns on good picture, then black screen several times
SOURCE: 52 RCA DLP 1080P Television with NO picture and buttons flash
IF you would like help diagnosing your set. Go to the enclosed link. They have the service manual for your set and offer unlimited chat support for only 29.99. Just click on your sets manufacturer and you will see your model. Then click on the contact us link and provide your email address and they will email your manual and instructions on how to obtain your support. I am one of their techs. This manual contains step by step procedure for troubleshooting Your RCA DLP Light Engine
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SOURCE: Samsung HLP4674W - changed bulb - still no picture - lights flash
If the lamp has been replaced I would think the Lamp ballast would be most likliest followed by the color wheel and then the Digital board. You can get any part needed for your model at www.tvrepairworld.com just leave them a email they respond quickly.
SOURCE: Turn on Samsung LN-T4665F and vertical colored
when I turn the modelLN-T4661F TV on it just clicks and clicks any help how to fix it.
SOURCE: I have a Sony KDS-R50XBR1
Five blinks - AKB
circuit (automatic kine bias), 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. In addition, unit could be in IK blanking, try turning
up screen A2 slightly.
I would bet on some component(s) have become thermo sensitive. Most of the time capacitors can do this type of thing. Most likely the defective caps could be in the power supply.
To locate the defective caps, you would have to be able to run the supply and use the combination of a heat gun and freeze spray (liquid air spray) for cooling. At the same time you would have to monitor the output of the supply to see the components that cause the output change.
It is also possible to have thermo sensitive components on any of the other boards. This would also require proper troubleshooting.
The service rep would replace boards until he found the defective board. Then he would return the set with the new board and the bill for his work.
If your set is out of warranty, it may be better to consider a new set. Servicing these can be fairly involved and expensive.
Jerry G.
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