20 Most Recent Toshiba 53H71 53 in. Rear Projection Television - Page 3 Questions & Answers

I have seen a lot of sets where the problem only happens when the set is first turned on---99% of the time one of the two STK-392-110 CONVERGENCE chips this set uses is Flakey--intermittant---The only way to know is replace both of the convergence IC's and see what you have---a bad IC can cause the set to shut down---and sooner or later the set will just shut down and not come on at all.

Let me know if you need more information about this type of repair as I have done hundreds of sets with this type of problem----every one I have ever seen where the convergence was intermittent----replacing the two IC's cured the problem.

REGARDS, SD TECH

The convergence IC's need to be replaced (possiply 2 fuses will also have blown) this is a common problem.

one of the stk ic's is bad and probably the the resistors controlling it. It is my custom to replace instead of only one

This is a convergence problem; in the customer menu there is an option to adjust it----if red or blue will not move in some direction---one of the two convergence IC's is bad and both need to be replaced.

I have step by step instructions telling what you will need for this repair. They are in Microsoft word----let me know if you want them and I will email them to you. You can buy both chips for this set on Ebay for about 13 dollars plus shipping for a pair.

[email protected]


I do this here for free so if this has helped you take a moment and give me a vote here.

SD TECH

Picture you submitted with this is Toshiba--if set is Panasonic pt47wx42 it uses two STK-392-110 CONVERGENCE IC'S----both need to be replaced and any of the blue 2.2 ohm resistors around them that are bad changed also--the resistors are light blue in color--if you locate them look for any that are white in the middle. The convergence chips are on metal heat sinks next to each other and are black(about 2 inch wide and 1 1/2 inch tall). They will have the STK-392-110 number printed on them in white.

You can buy both chips on Ebay for less than 20 dollars including shipping. I have step by step instructions for this repair on this kind of set--if you have the skill you can do it yourself.

Most of these sets just need the two chips changed and the set adjusted. If you cannot do the repair yourself--now is the slow time of year for TV shops--shop around--I do this kind of repair in the home--takes about an hour--shops will try to charge 300-400 for this and I do it for 200-250----I have done hundreds of these sets in the last year.

If someone wants to "take it to shop" keep looking; any good tech can fix this in your home; once the chips are replaced they will be good for about 5 years--some go 8 years.

If you want the instructions let me know and give me an email address and I will send them to you---If you have the skill you can do it yourself--
You did not ask---the reason they fail is there is a white heat sink grease applied to each of them when they are installed--it transfers heat from the chip to the metal quickly--after several years it dries out from the heat and the chip reaches a point where it cannot move the heat fast enough--it then fails.

I do this here for free and if this has been helpful give me a vote here--IF you have any questions or want to have the instructions reply to this here--The instructions are my own--they are in Microsoft word.

Regards, SD TECH

When you look in the rear of the set they are mounted to the large aluminum heat sinks on the D board ( brown board )

your hd source may not b a hd box, make sure you have the hdmi cables also

Most likley a convergence board. remove the back pannel to find the chassis number to order a new one. Wouldent hurt to check all fuses while your at it

free download pdf manual.
copy/paste this in address bar if link doesn't work
http://tv.manualsonline.com/manuals/mfg/toshiba/53h71_1.html

or
http://manualsonline.com
put in Toshiba 53H71 in search then click on get this manual.

hello i can send you a owners manual if thats any good give me your email address i'll send you it no charge thanks

shaun

hello check the glass fuse inside the tv good luck

shaun

Pip has its own tuner, try getting a cable splitter to split the signal into the tv. If you have digital cable you may need a second cable box to do this. If your cable provider still sends an analog signal the splitter will work.

In that case the convergence Ic's are defective or "leaking" they must be replaced. these are the TDA's

There is a problem in the control board and the unit is doing self diagnostics.  Since the problem occurs again the board is unable to fix itself and needs service.

Yes its actually a very easy repair. You need two STK392-110 Convergence ICs and six 1.2 ohm 2watt resistors. You can get the replacement parts and instructions at the following link.
http://servicemanuals.vstore.ca/

you have to unsolder the old one and put in the new one it should be located just forward of the tuner

Hi
The resistors are 39 ohms, metal oxide.
Usually both the stk392-010 ic`s (on heatsinks )
want swapping. You can get them off ebay..

Dave H.

Very likely it has bad solder connections on the vertical output IC. Or the IC could be bad and needs to be replaced.

the hyper board is bad. This is an expensive fix. An experienced Toshiba repairman may know how to fix this but it's still a big job.