Question about Philips 60PP9202 60" Rear Projection HDTV-Ready Television
I've read about the convergence problems and what to get to fix them, but I'm curious if that is where I should start. I got the tv from the couple that bought it new, and they had apparently had the convergence fixed on the tv once already. Then, a few weeks later, the tv messed up again. They called the same repair place and the guy said that it was the same issue and quoted them like 400 to replace the board.
I got the tv home and plugged it in and all it does is chirp and the power button lights up red.. Any ideas on where to start? This is my first time in a tv, but I have alot of experience- mechanical and electrical with automotive applications as well as being a senior mechanical engineering student.
First- On the conv bd. check all the resistors I beleive most of the bias res. are 6.8 ohms, they are usually paired that would mean 3.4 ohms. Any that have changed in value must be replaced, we use 1watt/2%. That set should have lasted a lot longer than two weeks. Probably bad resistors that were not replaced. You will have to replace the STK's again.2- (STK392-120 ? ) Let me know and hope this gets you started.
Posted on Feb 13, 2009
Your TV most likely has one or more possible problems.
Problem #1: Convergence Chip Failure ( common problem )
Here are some of the most common symptoms and example photos of a convergence problem
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move them up, down, left, and right.
If you can't move them in all directions your convergence chips are bad and should be repla60PP920217F Convergence Problem? - 2c07611.pngs a common problem.
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.
Problem #2 CRT Fluid is Cloudy
Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.
Picture of a set that needs the fluid changed.
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.
Posted on Feb 13, 2009
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Posted on Jan 02, 2017
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