Question about Toshiba 36A40 36" TV

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Picture clear, then "grainy" can hit TV and will clear up

Just started doing this; is this something that can be repaired or is it time for a new TV? Picture will be clear, then change to a "grainy" picture--but we can hit the side or top of the tv and it will go back to clear--sometimes for 5-6 hours, sometimes less.

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Sounds like a cold solder joint in the tuner circuitry. Unless you can do it yourself it's probably not going to be worth the repair bill.

Posted on Mar 09, 2009

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Television


Please never do this any more. It might make things worse. The fault to your TV is with some loose solder terminals at its circuit board. Contact any service technician to rectify it. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product by anyone else could result in serious injury or death. If you are not familiar with electronics, do not attempt to repair. Whether you suffer fatal electrical shock. Instead, contact the nearest service center.

Jun 02, 2013 | Televison & Video

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I have a Sony Trintron KV-PG21P40. When I'm


Since the set recovers under some conditions, I would first look for poor solder connections. With a set of your vintage, it is common for some of the connections to become faulty. If you can solder, resolder any connections on the board that appear grainy or have rings. Please note that there are potentially dangerous high voltages present inside the set even when unplugged.

Keep us posted on your progres.

Dan

Mar 09, 2009 | Sony Televison & Video

1 Answer

Toshiba TV Mod. TV32D60


The problem is not likely to be a switch. I believe that your set has what is called a "switch mode" power supply. This requires oscillation to occur. The oscillation is started by a capacitor circuit. If the cap becomes defective, the oscillation may not start and thus the TV won't come on. Unfortunately this is not a set with which I am intimately familiar so I can not tell you what part to replace. This should be a simple repair however. Check around at a few service shops to see if you can have it examined without a large expense. In the meantime, I'll see if I can find a service manual for it.

One other thing you can try (fi you can solder) is to look for poor solder joints on the main board. If some exist, they can change the circuit characteristics enough to cause what you are seeing. Look for and resolder any joints that appear to be grainy or have rings.


Keep me posted.
Dan

Dec 22, 2008 | Televison & Video

1 Answer

Cannot get channel 2 clearly


Normally grainy pictures are a result of poor ground connections, although usually for more than one channel. Check the cable connections first. Otherwise all I can suggest is to have the tuner replaced.

Dan

Sep 11, 2008 | Sony FD Trinitron WEGA KV-32FQ70 32" TV

1 Answer

Green coulour?


This is a classic indication of poor solder connections inside the set. If you are comfortable with electronics and can solder, open up the unit and resolder any connections that appear grainy or have rings. That should resolve the problem.
Dan

May 13, 2008 | Panasonic CT-36D32 36" TV

1 Answer

Green screen


No! that is difinitely not an easy fix. there is something wrong with the picture tube. it is the part that emits light and colors. you need to bring that to a local repair shop.

hope this helps.

thanks.

Nov 19, 2007 | Televison & Video

1 Answer

Mono setting?


What channel is it and when they tune in that channel, is the picture nice and clear or is it grainy and snowy before the screen goes blue? On some sets, if the signal is weak, the picture will go blue. This is called Blue Screen and is there so you do not see very poor, grainy and snowy pictures. Some sets will have an option in the menu to turn the blue screen off.

Aug 27, 2007 | RCA 24F512T 24" TV

1 Answer

Picture in picture / or picture problems


First thing you should try is unplug the set for several hours. If you have the same problem, then you are going to have a system control issue and or a standby power supply issue. These problem, unless you know how these circuits work in a TV set, will need to be looked at by a trained tech. Good Luck

Aug 13, 2007 | Sony KV-35V75 35" TV

1 Answer

KV-XJ29M50 29" TV-Loud thumping sound on startup


Symptoms are not related,what you hear is the high voltage turning on and that is normal if it only does it for less than a second,the grainy picture might be intermitant,dont turn it off,when the picture is grainy tap the side of the set to see if it racts and if it does you know you have a loose conection.This could be outside because of a loose ground on tha cable or inside in the tuner.

Sep 22, 2006 | Sony KV-XJ29M50 29" TV

1 Answer

Static on picture


The more you hit the set and wait to get this problem fixed ,the more its gonna cost ya. Your problem is a very common one for RCA. Whats happening is theres several grounds around the tuner sheilds and tuner covers that are intrmittanly going bad because of the differant types of materials they used for the sheilds and covers , so the metals are all reacting differantly to the solder ing in the set. This set if not fixed right away will cause the eeprom to go bad and or the vertical swwep Ic to fail. The repair shouldnt cost more then 125 to 175 bucks or your getting ripped off!! Happens all the time . Good Luck

Jun 16, 2006 | RCA G36788LV 36" TV

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