Apex Digital GB4308 43 in. Rear Projection EDTV-Ready Television
Problem for Apex Digital GB4308 43 in. Rear Projection EDTV-Ready...

Convergence IC's replaced, still won't converge




By frankgant on Feb 29, 2008

" "
Okay, so I had the normal problem where my convergence was off and I couldn't adjust all of the lines but I could save what I had done. So I replaced the IC's. However this hasn't fixed my problem. I still can't move the lifes sideways when in red but can move the up and down lines. What in the world is going on? Is it possible to have another bad IC even though it was brand new? And is there a way to tell which one on the board is controlling the red lines? Could it be something other than the IC's?

your help is appreciated.
Comments:

Mar 02, 2008

- I have now tested the resistors and found one to be out of range. Should be 2.2 ohms and it's reading .796. So well out of range for it. Bet that's my problem. Now I just need to find these darn resistors.

Mar 29, 2008

- Okay, I had it all working. Moved it into the house from the garage where I was working on it and now I can no longer adjust the convergence at all. What the heck is going on. lol

Solution #1

posted on Apr 29, 2008
Not Rated)

daml

Rank: Master 
Rating: 85%, 7 votes
I had a similar problem. Purchased a rptv second hand. Got it home convergence was off (was OK prior to moving it). Turns out it was a dry solder joint. Check underneath the conv pcb.
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