Mitsubishi WS-65903 convergence problem
 

The TV is a Mitsubishi 65" wide screen HDTV Projection set. Model
WS-65903. It's about 5 years old.

The original problem was a blue shadow about 4 inches to the right.
Seemed like a typical convergence problem as we'd done a couple of
very similar models recently. Never a call back.

Upon inspection of the Power Supply /Convergence board, there were the
typical broken solder joints on the two STK392-040 I.C. modules
which control the convergence correction. I ordered replacements put
them in and put the chassis back in the set. The picture looked
perfect

About a week later I got a call back. Same problem with the blue. Now
I don't see anything apparently wrong in the circuit, but I don't
just want to replace the modules, because I'm afraid they'll fail
again.

Looking for a schematic , service manual etc.

Also, if anyone has any suggestions or experience with this set I'd
appreciate any help.

Regards, Larry

you can email me at

Get the STK,s from Mitz as its very possible you
replaced the STK,s with cheap Chinese ones.!!


kip
"L" wrote in message
...
The TV is a Mitsubishi 65" wide screen HDTV Projection set. Model
WS-65903. It's about 5 years old.

The original problem was a blue shadow about 4 inches to the right.
Seemed like a typical convergence problem as we'd done a couple of
very similar models recently. Never a call back.

Upon inspection of the Power Supply /Convergence board, there were the
typical broken solder joints on the two STK392-040 I.C. modules
which control the convergence correction. I ordered replacements put
them in and put the chassis back in the set. The picture looked
perfect

About a week later I got a call back. Same problem with the blue. Now
I don't see anything apparently wrong in the circuit, but I don't
just want to replace the modules, because I'm afraid they'll fail
again.

Looking for a schematic , service manual etc.

Also, if anyone has any suggestions or experience with this set I'd
appreciate any help.

Regards, Larry

you can email me at