This model uses two convergence IC's----if 3 D one or both are bad.
Most of the time this set uses either two of the STK-392-110 OR THE STK-392-150 CHIPS.
Both chips and any bad protection resistors around them need to be replaced and the set adjusted.
If you are able to do the repair yourself total parts cost will be under 30 dollars.
Some history for you:
This set like all
rear projection
tube type sets uses two chips---the ones in your set are Black in
color--about 2 1/2 inches wide X 1 1/2 inches tall and are on either
one large or two smaller heat sinks with fins on them.
When the chips are installed a white grease called
heat sink compound is applied to the metal back of each---the grease transfers heat from the chip quickly to the metal it is bolted to.
After some years the grease dries out from the heat and one of the chips goes instantly.
You can buy a pair of the chips for your set on Ebay for less than 15 dollars plus shipping--
If
you cannot do the repair yourself--shop around your area---most shops
charge 300-400 for this type of repair. Whoever you get to do it make
sure BOTH chips are replaced or you will have the same problem in a few
months.
If you open the set and locate the chips---they will
have the full STK number printed on them in white letters----there are
about 12 resistors around them that need to be looked at--if any are
discolored they need to be replaced.
If a shop says it HAS TO GO
TO THE SHOP keep looking as any good tech can do this repair right in
your home in about 1 hour---I know as I have done hundreds of them.
IF
you can solder and are handy I will give you general instructions on
how to do the repair and what you need---some people I talk to can
either do it or have a friend who can do it for them---let me know
I can tell you what you will need aside from the parts and how to proceed with the fix---
If all this helped rate this solution---I do this here for free.
IF YOU HAVE ANY QUESTIONS OR NEED ADVICE LET ME KNOW--I am here to help people.
Regards, SD TECH
Expert
