Question about Mitsubishi WS-55809 55" Rear Projection Television

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It is a toshiba 57h81 and i would like location of vidio board

The picture is scrambled until it warms up i have heard it has bad solder caps.

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Check this site for the solution
Read down basically it a heat
and esr problem with capacitors
also check here
for the tools etc you
may need if you are going
to do this yourself

Posted on Dec 08, 2007

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1 Answer

Horizontal lines on toshiba 57H84 television until warms up


Set will have a "HYPER" BOARD causing this issue----there was a service bulletin with a photo of the board with 10 surface mounted filter caps that dry out and need to be replaced.

The failing caps tend to begin to regain capacitance when hot---gradually the wait gets longer and longer.

Board no longer available from Toshiba so 3 choices: replace the caps yourself (tricky and not easy) or have it sent for rebuilt to PTS electronics (about 200) or go shopping for a new set and retire this one.

Oct 31, 2012 | Toshiba 57H81 57" Rear Projection...

1 Answer

Location of convergence chips in Toshiba 57H81.


hello if you can use a soldering iron you shouldn't have any problems but you will need to test the resistor in front of the ic and the capacitors at either end of the ic ! the ic usually located to the right hand side of the tv behind the tuner board connected to metal frame called a heatsink 2 big black chip good luck

regards
shaun

Mar 27, 2010 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba Projection Television Problems


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Apr 11, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 57h81 location of hyper board and remove procedure


Hyper board is located directly behind the input board, this is where all the tv conections are, then they are two tabs soldered from the bottom of the board then it simply unplugs, But replacing all those capacitors on that board can be a little tricky, replace all 10up @16volt caps and that usaly repairs the board

Feb 12, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Distorted Picture Upon Startup


You have a bad capacitor in your power supply.

Dec 22, 2007 | Toshiba 57H81 57" Rear Projection...

2 Answers

Toshiba 57h81 location of vidio baord


yes they are bad, they are surface mount on the digital board. Board replacement is advised. They are not easy to change if trying to replace the capacitors.

Dec 08, 2007 | Toshiba 57H81 57" Rear Projection...

1 Answer

Picture Jumps/flashes for first 5 minutes


There is a module called a hyper board that is vertically mounted near the jack panel. Inside the module are 10mf/25v capacitors they are grtting weak. The module is fully shielded and pluggs into a socket. the module has 4 tabs (2 on each end) that must be unsoldered before it can be unplugged. This repair should be done by a qualified technician. The caps are surface mounts and very small. Unless you have excellent soldering skills and a rock steady hand DO NOT ATTEMPT to repair this problem on your own.

Nov 16, 2007 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 57H81 picture bounces. Can't tell if horiz. or vertical.


Unstable picture, wavy, jittery, and loss of sync are a symptom of bad capacitors in the hyper module. The problem is worse when the set is cold, but when warm the sympton gets less or goes away. In the latter stages the problem never gets better even after the set has been on for hours. There are about 6 surface mounted caps (10mf/16) inside the shielded Hyper module. The module is vertically mounted behind the jack panel and can be unplugged from its socket after unsoldering the 4 anchor tabs on the bottom side of the PCB. This type of repair should be made by a qualified technician do to the complexity of chassis removal and expert soldering skills.

Oct 25, 2007 | Toshiba 57H81 57" Rear Projection...

2 Answers

Picture Jumps/flashes for first 5 minutes


I had the same problem and followed the instructions from Jack and my 57h81 is bak up and running. Thanks Jack. RonD

Jul 02, 2007 | Toshiba 36HF72 36" TV

1 Answer

No picture but have sound


Toshiba 57H81 57 in. Rear Projection Television Go to above under solution for tip on fixing your problem.

Jun 22, 2007 | Toshiba TP50H50 50" Rear Projection...

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