toshiba 42H82 convergence problem

[standis]

Hi
i've got an toshiba model 42H82 who's only 5 years old.
i've got a troble like the guy whos just post a couples of day ago for is
toshiba 42H83.
i was reading the thread problem with my 42H83...
just want to know if the new ic's(stk 392-160'e) fit in the 42H82 ?
did i have to change capacitors and metal 2w 1.8 ohm resitors.

help will be very appreciated
thanks
Standis

[Krankshaft]

Re: toshiba 42H82 convergence problem

The problem you show in the picture is a problem with the hyper module and NOT the STK convergence ICs.

If your problem is wavy picture replace all of the 10uf SMT caps on the hyper module.

The hyper module is the component hooked into a socket on the signal board.

It is incased in a metal box and it towards the back of the board.

[standis]

Re: toshiba 42H82 convergence problem

thanks
ok
i've found the exact part an there is 11 surface mount capacitor to change.
do you know a place on the internet where i can find those parts?
thanks
standis

[Krankshaft]

Re: toshiba 42H82 convergence problem

Mouser.com has them and just about any major electronics supplier.

They're standard SMT lytics.

I can't seem to find my receipt for the caps anymore .

Here is a good example of the case type you need though:

http://www.mouser.com/Search/Product...IQYoMdjw%3d%3d

[standis]

Re: toshiba 42H82 convergence problem

i've just removed the specific part, but there was no solder on the 4 pins who
are attached to the pc board.
(did'nt have to removed the whole pc board!)
i just want to know if it's can be problematic.
maybe those 4 pins are connected to ground?

this tv was gave to me by a friend and he said that he paid 500$ last year
to repair it!

look like the trouble's back !?

maybe the tech forgot to resolder those pins?

any opinion?
thanks
Standis

[standis]

Re: toshiba 42H82 convergence problem

maybe if i put new solder to those 4 pins.
contact will be made and the image gonna be ok?
thanks

[Krankshaft]

Re: toshiba 42H82 convergence problem

The pins of that case are to prevent stray RFI from getting into the module and yes they do connect to ground.

Resoldering may be worth a try if the symptoms persist however you will need to open the metal case and replace the caps.

[standis]

Re: toshiba 42H82 convergence problem

i'am looking for someone who can do the job for me!
i don't have the proper equipement for smt.
and the is also a damaged trace aroud cx261.
damaged where caused by the thec who put some regular lytic caps in it.

[kc8adu]

Re: toshiba 42H82 convergence problem

the bad caps sometimes eat the traces.that brown crud is cap juice and its corrosive.
btw topcat or i can do that job.

[Krankshaft]

Re: toshiba 42H82 convergence problem

damaged where caused by the thec who put some regular lytic caps in it.

Ugh I had a feeling that someone would eventually do that.

The laziness of these so called (TV techs) is very sad indeed.

These people are just glorified module chuckers. They must shake like leaves if they actually have to pickup a soldering iron.

Hopefully there are still techs out there who want to do the job right.

[standis]

Re: toshiba 42H82 convergence problem

How much for a job like this?
thanks

[gevvv]

Re: toshiba 42H82 convergence problem

The problem you show in the picture is a problem with the hyper module and NOT the STK convergence ICs.

If your problem is wavy picture replace all of the 10uf SMT caps on the hyper module.

The hyper module is the component hooked into a socket on the signal board.

It is incased in a metal box and it towards the back of the board.

Thanks Krankshaft

[Wizard]

Re: toshiba 42H82 convergence problem

I prefer to put in regular electrolytics instead of horrible SMD caps. Sometimes the traces get torn or eaten away and I simply repair these and secure the freestanding caps with silicone glue, just enough to keep them together but not so much that glue goes all over like one big mess. Just a small blob or few gobs to stick two or more caps together even there is some space between them.

And using regular caps is easier to use and obtainable and cheaper, and ESR is much lower. Also you will find some more SMD also bad not just 11 10uF caps. Send that module to either of two to do the recap mentioned above.

And YES, the tabs have to be SOLDERED into the small signal mainboard when reinstalled. That means taking out the mainboard from the TV or at least unplug wires enough to get board tipped up to do all 4 solder joints.

Cheers, Wizard

[Krankshaft]

Re: toshiba 42H82 convergence problem

Be careful with the traces for the signal board grounding lugs they are very easy to lift I don't know why.

If you would send it to be recapped to a company like PTS the 100 uf caps would be replaced too but I just replaced my 10 ufs since my favorite show was about to come on.

I guess the 100 ufs could be affected too but they weren't for me. A year later I needed to replace the convergence amps and a few blown resistors though this TV IS ANNOYING .