20 Most Recent Toshiba 42H81 42" Rear Projection Television - Page 2 Questions & Answers

your main input board needs to be replaced

Likely to be the STK convergence chips causing a protection circuit to switch the TV off. Have you got any onscreen convergence problems (i.e, colour fringes)?

begins working for alomentacion source that can be damaged or filteos the same regulatory

if the manual button does not work the tiny switch under it is bad.

Sometimes may be a bit difficult to find as a problem, once a hour or once a day or what?

check for power supply board failure.

Hi,go to ebay and search for TEXAS TV PARTS or texasgreatdeals4you.then Ask this guy to fix your board,he will tell you which board to send to them.alright.

Unsolder the convergence chips and see if set turns on with them removed from circuit.

Kits are available but price is not real cheap---basically you have to unbolt chassis and release some cables inside to get enough room to pull chassis back and put up so bottom faces rear of set.In this model both chips are near the middle of the set inside--unsolder all 18 pins on each and the 4 pins that hold each heat sink in---you remove the sink with chip still attached--clean the white grease off, apply new and replace both chips.Works best if put front chip WITH THE HEAT SINK ATTACHED back in first and repeat with rear sink---it means when you install you have to get 18 pins plus the four pins for the sink installed in one shot.May not be a task for a first time person.

If can speak English I can help as my Spanish is limited---the convergence of green cannot be adjusted except in technical menu and if bad needs both the stk-392-110 chips replaced first.

You can either yrplace your Hyper board, or replace all the serfice mount capacitors in it. The cap replacement fixes this 90% of the time.

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix. Here is an example video

The model indicated is a older Toshiba rear projection(if another brand/model let me know)You should be able to select the rear inputs either via the remote (original one) or with the input (video) button on the set.If in the menu they are grayed out--it means they have been locked out.Failing that a serious problem exists in the set's microprocessor.Hint: if you have not tried it UNPLUG THE SET FOR A WHILE TO SEE IF WHEN YOU PLUG IT BACK IT WILL RESET and restore the inputs.

On some models there is a picture position setting. One for horizontal and one for vertical. Don't mess with convergence, that probably won't help. Older models use knobs; new ones use the menu. Either way, you are looking for position adjustment.

Older sets, for each there should be size, hold, and position. Same for menus but it may have a picture that looks like one square offset on top of another.

Good luck. and if you need more help, please state the model #

Ken

The Code is 2267 or 2193 For CTF4071/CTF268/CTF3271 (DIGITREX ) Applicable to Newer SKY+/SKY+HD (Version 9 )(Rev 9) 2) Follow the sky remote programming instruction available online. For other TV Brand, please e-mail:[email protected] for instruction. A small fee of 5 GBP is applicable. Thanks