TV Problem

[Richouse]

I have an older model (10 yrs or so) Sony 52" projection tv. Apparently the red projector has gotten out of alignment somehow. There is a focus function in the settings that I have tried but obviously it has not worked since im here now. I'm wondering if there are any tv repairmen here, or anyone who might have seen and fixed this before? if so can and how can I fix it?

Thanks....

 

[wfooshee]

If you're talking about a red fringe on everything, you're talking about convergence.

I had a Sony 41" about a hundred years ago, and there was a code you put into the remote to get into service mode, and from there you had a bazillion adjustments for everything from levels, color balance, overscan, convergence. Of course in order to do all that correctly you need color bars, dot patterns, a blue filter, blah blah blah. Just playing with it in your living room is gonna have bad results. Very Bad.

It's gonna take a pro if it's not fixable in the menus on the remote.

BTW, my set was tossed when it kept blowing fuses on a certain board. I was told the problem was either a pair of 50-dollar amplifier chips of some kind, or the projector tubes themselves.

 

[TCMike]

Sounds like a good excuse to get a new flat screen. :exhappysmiley:

 

[Richouse]

Sounds like a good excuse to get a new flat screen. :exhappysmiley:

Yeah you are right... and it may come to that.... I really don't want to spend the cash if this one can be fixed though.

 

[AVGeek]

Definitely sounds like a convergence issue. On my Sony RPTV, there was a user accessible menu to bring convergence in. If not, try a Google search for the model number of your TV along with service menu.

Dialed in properly, CRT sets still have the best overall picture quality.

 

[Richouse]

it does sound like I have a convergence issue... I did alittle research and found I'll have to open it up and change out a board and some fuses.. does that sound right or is there some adjustment I can tinker with to fix it???

 

[bramfrank]

The cionvergence ICs (one, the other, or both) have fried because they overheated and took out a few low value resistors on the convergence board - a VERY common problem for virtually ALL projection TVs from 1988 to 2005 . . .

The dealer or service tech will be pleased to fix it for somewhere around $500 - or you can do the research and buy the parts (in my case it was a Hitachi and I found the kit of parts I needed on Ebay) for between $20 and $50 and an hour of your time.

Note that there are 'aftermarket' and 'clone' convergence ICs out there which work, sort-of. Spend the extra $10 and buy the real thing so you won;t have to redo the work in 2 weeks.

 

[TechJunkie]

Had my 52" Sony projection fixed. It was like 225.00 including the trip to my house. Guy came in, popped two boards out, un-soldered a component on each and soldered in a new one. Popped the boards back in and bang the TV looked good as new. He said something about a Convergence module and that after enough time they begin to overheat and will fail.

Wife decided to buy me a new Samsung 52" LCD TV for a surprise Christmas gift so my 14 year old is now playing Xbox on the Sony. It looks as good as it ever has and has never acted up again.