Hitachi 60sdx88ba no sound or picture, convergence chips replaced about a year ago.I remove them both to see if the set would power up without them, no change. On the power board D928 stays lit all the time. D971, D930, D919, D920 only lite when power is on. D908 red protection stays dim all of the time. On the mainboard all LED's are lit at power up for a moment then DP16 goes out followed by DP15 then DP2 and last is DP21, DP22 stays lit. DP06 blinking red.

You have a defect in the convergence circuit. Both chips will need replaced and possibly a resistor or two. Chip part numbers are STK392-110. Typical repair runs around $350

Bill W
integrityhomeworx.com

Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

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 replaced. This is a common problem.

Solution #1

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.


TV set after fluid change



Solution #2


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

That sounds like the convergence problem I had about a year ago, and like you, I replaced the convergence chips and that fixed the problem. It's cheaper to replace the chips if you do it yourself, but maybe not if you send it out for repair. If you can find an exact replacement board, that would fix it too, but I wouldn't necessarily expect it to last longer. The advice I read on replacing the convergence chips in my rear projection TV was that they would last 2 or 3 years and then need replacing again. So you're within that range.

no picture condition could be caused by a problem in the horizontal deflection circuit or a power supply failure. A horizontal deflection problem often are followed by open fuses due to shorted components such as a h.o. transistor ofcourse there are a lot more componentd that constitute this circuit. Another no picture condition could be caused by defective convergence power amps. these amps usually give an clear indicator when they are about to quit(color curved or missaligned, double color images etc.) this is a common problem with projection tvs and that is where I would tell the tv tech to start looking.

You have to replace the chip with the same kind, or at least crossed referenced, but still exactly the same but diffrent manufacturer.

Power supply needs to be replaced this time.

Your TV most likely a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here are some photos of convergence problems.




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 replaced. This is a common problem.

SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Check out this document to adjust your Hitachi projection t.v. I did my 11 year old t.v. today.

Hitachi_DCAM_Manual.pdf

most of those have screws down one side of the heatsink going into the PC board and other models you have to unscrew the ics through the fins on the heat sink.

Im thinking your convergence chips is causing all of your problems
but here's the fix to the convergence:
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html