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Older Toshiba 48" TV

  • Thread starter Michael L Kankiewicz
  • Start date
M

Michael L Kankiewicz

Jan 1, 1970
0
Hello all. I have an older Toshiba 48" projection tv that is having a
problem. All of a sudden, the picture will go concave on all four sides,
and the colors distorted. (Lots of red and green shaky blur.)

What's driving me nuts is that it's intermittent. The tv could run fine
for 4 hours, then all of a sudden it hits. Then maybe two-five minutes
later it snaps back to normal. Or when the problem hits I turn the set
off for about 5 min and then back on and it's fine.

The repair service I talked two said it might be a "convergance" problem,
not expensive to repair, but they will only come out when it's happening,
and it's unpredictable.

Any advice? I got this tv for a song a few years ago, so I don't mind
puting a few bucks into it if it buys me several more years with it.

Thanks,
MK
 
J

Jerry G.

Jan 1, 1970
0
You should call another TV service shop. It would be best to call the
authorized Toshiba service rep for this one. They would most likely have the
parts on hand if the set is not too old, and they would probably know what
the fault is for your model.

--

Jerry G.
=====



Hello all. I have an older Toshiba 48" projection tv that is having a
problem. All of a sudden, the picture will go concave on all four sides,
and the colors distorted. (Lots of red and green shaky blur.)

What's driving me nuts is that it's intermittent. The tv could run fine
for 4 hours, then all of a sudden it hits. Then maybe two-five minutes
later it snaps back to normal. Or when the problem hits I turn the set
off for about 5 min and then back on and it's fine.

The repair service I talked two said it might be a "convergance" problem,
not expensive to repair, but they will only come out when it's happening,
and it's unpredictable.

Any advice? I got this tv for a song a few years ago, so I don't mind
puting a few bucks into it if it buys me several more years with it.

Thanks,
MK
 
A

Art

Jan 1, 1970
0
Probably the convegence circuit, the STK output devices, associated
resistors, power supplies, etc. Generally about $250 to repair. Have a
service tech come out and check it out, also have them eveluate the
condition of the crts before going too far.
 
M

Michael L Kankiewicz

Jan 1, 1970
0
Probably the convegence circuit, the STK output devices, associated
resistors, power supplies, etc. Generally about $250 to repair. Have a
service tech come out and check it out, also have them eveluate the
condition of the crts before going too far.

Thanks to both of you. It was the local Toshiba authorized rep I called,
and he was pretty sure about the problem, but but insisted they couldn't
guarantee the fix if it's not happening when they show up. AND charge
$50 just to be there for nothing. I *hate* intermittent problems :|

Like my old Tandberg fm tuner that occasionally goes haywire tuning in
to 93.5 when it's set at 88.7 for ten minutes, then is fine for a week.
Arghhhhgh!!

MK
 
B

b

Jan 1, 1970
0
If you can use a soldering iron, you could do worse than checking
/resoldering connections in the relevant area on the main board. From
what you say, it could be a dry joint.
I had an old sony KV27EX with a similar problem, just needed to
resolder connections on the picture geometry adjustment board (which I
suspect also had a few flaky pots - cleaned those too)

However, if on opening the set you decide it 's too difficult or you
aren't sure how well you could do it , consult a tech. see
www.repairfaq.org for safety advice and other tips before beginning.
Good luck
Ben
 
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