20 Most Recent Toshiba 36A42 36" TV Questions & Answers

PS issue. The set has been used and abused and has finally had it and died. Get a new one.

Check its main power supply regulator section for the fault. Check the fuse. If the fuse found open or burned, find out the reason first. If so, there must be some kind of short circuit inside the circuit board. Might be some components to get shorted. Check it first. Rectify the reason for the fault first, and only then replace the fuse, if it is found faulty. Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. It will make search easy. There are more than 1300 posts to different brand TVs now. Pull up older posts there. Sometimes it might help you.

I have the same problem, did you ever find a fix for it? Or is the TV dead?

Hello

Your TV is has no green cathode voltage at the picture tube pin. There are three electron guns for every colur picture tubes, Red, Blue and Green. These three guns together mixes all colours we see on the screen. If any one of them happen to be not working properly, that colour must either be lack, of excess. Voltages at the above said three colour cathodes are somewhat equal to each other. if voltage goes down, the emission of that particular cathode will rise, and as a result that colour will be predominent on the screen.
These cathodes are fed voltages from the video output stage of your Tv. This stage can be located at the neck of the picture tube itself, as a card pluged onto it, called the base card. There will be either three trasistors to drive the each above said three cathodes, in some sets, there will be independent three ICs or only one IC capabale of driving these three catodes will be used.
You just open your TV, after unpluging it from the wall power socket. You can locate the above said base card, at the neck of the picture tube. Before doing anything, check very keenly for any loose solderings are there on the CRT base board. It is very difficult to locate the loose solderings, as they may be microscopic in size. So I advice you to resolder all the soldering points on that board, by applying a little more solder, without making any short circuit bridges in between.
In most cases. this will solve the problem. If not, check the voltages at the above said three cathode, wheere tey were marked on the PCB itsef as R ,G & B. You can see that the green cathode voltage of your set will be much lower than the other tow, in your TVs case. If so, check the resistor connected to the revalent Ic or transistor, whichever it may be, for open circuit. that is check whether it has burned or not. If that resistor is Ok, replace the transistor or IC, which drive the green cathode.
If you wants furthermore assistance, feel free to get me through Fixya. OK.

Hello
If it has broken, there is no way other than replace it with same type. For that you have to open your tv, pull out the board that contains that socket, will be combined one, resolder it out from the board, and go for the same type and leg confuguration. Replaceing it will solve the probelm.OK

The short answer is no. The reason for that is because it's an analog TV and has a standard tuner which is now obsolete because of the changes to all digital programming last year. You won't be able to use it with out a converter box. I won't recommend a particular brand or model, that would be your choice. Here is a selection of "boxes" available.

http://www.google.com/products?client=firefox-a&rls=org.mozilla:en-US:official&channel=s&hl=en&q=Digital+to+analog+converter+boxes.&um=1&ie=UTF-8&ei=GVSxS9WXE4-CswPd27XKAQ&sa=X&oi=product_result_group&ct=title&resnum=3&ved=0CC8QrQQwAg

yap, you can do so...

I will see what I can find. I do have a solution though. Unsolder the switch and if you have to get into the menue use the remote control. The set will work fine without the switch. It is unbelievable that these switches are nla but is does happen and way too often. If I am able to come up with something I will let you know if you kick back a response.
Hope this helps,
Skyassoc

A common cause is a short occurred in the electron gun of the CRT. This usually causes collateral damage to support components in the CRT drive circuits.

The set will require proper shop service to determine the exact failure. I personaly would not invest any money in a set of this age. I would consider replacing it with a new LCD type.

Jerry G.

If you can see the menus this means the CRT, high voltage, scan amplifiiers, the output video processor, and CRT drive circuits are working. The fault is most likely in the video section of the input select circuits.

Maybe the Toshiba parts department can supply a service manual for your set. With a signal source, a scope, and a DVM, an experienced technician can troubleshoot your set to locate where the failure is occuring.

I have not serviced this model, but in other models I have found the main input select IC to be defective. In some cases I also found a bad voltage regulator IC that supplies the input section has failed.

Jerry G.

A common cause is a failure in the one of the scan amplifiers or on the high voltage section. It is also possible to have a power supply fault that will give this error message.

Jerry G.

The most common cause is the emission of the CRT electron guns are decreasing. They are going out of range and of proper balance in relation to each other for the AKG (Automatic Cathode [K] Gain) circuits in the CRT drive circuits to compensate for proper colour balance and colour tracking.

A less frequent cause are components going defective in the CRT bias and drive circuits.

I would be considering a new TV set with this type of fault condition. The cost of servicing this would be expensive.

Jerry G.

the receiver on the tv maybe going bad i know from future exp they usually just quit responding i would look at the solder connection on the board also but i bet new receiver would probally get ya back on the road good luck

did u try the sliding button on the left hand side, make sure its slid up to the top, on tv, thats what i did when that happend to me

open your tv.At the back you see a plyback,it is big parts of tv with a wire attached to the picture tube,that is plyback At the buttom you wiil see a two knob, the lower knob is for the screen and the upper knob is for the focus.Adjust the lower knob or screen .

There're video guns. Red, Blue, and Green. Sounds like they maybe going bad and need replacing. The red is already going out. Could be about $200 or more to fix.

This is a known issue with this TV. The following might resolve it: Check Mute and Volume: Ensure that the TV is not muted and that the volume is set appropriately. Sometimes accidental button presses can lead to muted sound or low volume. Inspect External Speakers: If you're using external speakers, verify their connections. Loose cables or faulty speakers can cause sound issues. Test Different Inputs: Connect a non-HDMI device (such as a DVD player) to the TV. Observe if the sound distortion occurs. If it doesn't, the problem might be related to the HDMI signal from your Virgin box. HDMI Troubleshooting: If the issue persists with the DVD player over HDMI, consider the following: HDMI Cable: Check the HDMI cable for damage or loose connections. Virgin Signal: Contact Virgin to inspect the signal/lines and replace the box if necessary. Mainboard Replacement (if needed): If the sound distortion persists, it could be due to a faulty sound processor chip on the TV's mainboard. In this case, consider replacing the mainboard. TOSHIBA 42RV500E, 42RV500T, 42RV500Y, 46RV500E, 46RV500T User Guide (manualmachine.com)