Toshiba rear projection bowed picture and color separation

[juan valdez]

It's a model TP55D80 and the picture has separated into 3 (RGB), and
contracted in the middle. It's sort of a "fishbowl" effect. It's been a
slowly increasing issue. It's 55" and I won't be able to afford to either
replace or have it repaired for some time.

 

[James Sweet]

It's a model TP55D80 and the picture has separated into 3 (RGB), and
contracted in the middle. It's sort of a "fishbowl" effect. It's been a
slowly increasing issue. It's 55" and I won't be able to afford to either
replace or have it repaired for some time.

Why have you kept using it while it was malfunctioning? That's just
asking to cause a lot more damage.

Did the convergence gradually get worse over time, or did it snap in and
out?

 

[Art]

:What's convergence", is the reply I expect! Have the flipping thing
serviced before it gives up totally.

 

[Jumpster Jiver]

It's a model TP55D80 and the picture has separated into 3 (RGB), and
contracted in the middle. It's sort of a "fishbowl" effect. It's been a
slowly increasing issue. It's 55" and I won't be able to afford to either
replace or have it repaired for some time.

If you casn't afford to replace or repair it then why have you posted
this message???


The problem is probably on the convergence board. That's the circuit
that causes the three promary colors to be properly aligned to produce a
viewable image.
A qualified technician needs to troubleshoot the TV. The repair will
(probably) involve replacing a few ICs, and checking/replacing some
resistors and/or capacitors on the same board.
When you can afford the repair, call a repair shop and have them send
someone to look at it.

 

[James Sweet]

If you casn't afford to replace or repair it then why have you posted
this message???


The problem is probably on the convergence board. That's the circuit
that causes the three promary colors to be properly aligned to produce a
viewable image.
A qualified technician needs to troubleshoot the TV. The repair will
(probably) involve replacing a few ICs, and checking/replacing some
resistors and/or capacitors on the same board.
When you can afford the repair, call a repair shop and have them send
someone to look at it.

One doesn't have to be a qualified technician to repair a convergence
problem, but basic soldering and desoldering skills are required, as
well as a an understanding of basic safety and component identification
in regards to TV servicing. There's enough info in the FAQ for a
reasonably savvy novice to repair a problem like that.

 

[juan valdez]

it snapped in and out, with increasing frequency, until it finally just
stuck. it's not been used since...

 

[James Sweet]

it snapped in and out, with increasing frequency, until it finally just
stuck. it's not been used since...

Resolder any cracked solder joints on the convergence board and you'll
likely be good to go. You may have blown the convergence chips by
running it with it snapping in and out like that in which case it's
usually $50-$100 for a new set but you might get lucky and fix it by
just resoldering.

 

[juan valdez]

I have a fair capability as far as electronics soldering goes. I also have a
basic understanding of safety from making jacob's ladders from old TV guts.
At least I'm pretty sure what NOT to mess with. I apologize for being naive,
but where is the FAQ?

BTW I'm going to attempt this repair regardless of the danger. So I
appreciate your input. As far as any flames go... although I do possess
common sense, obeying it only seems do make life dull.

Thanks for your assistance.