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P030rv11 this transister did work plz explain

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What couses red diagonal line and red back ground picture on my toshiba television.


short on crt board check driver transisters on crt board if you want to confirm then switch them with green gun transisters from crt just swich them and see if next coclor show difrent if yes transister bad if not open crt cathode from red side to see if crt cathode shorting

Mar 05, 2012 | Toshiba Televison & Video

1 Answer

I purchased an old Realistic TRC-431 CB. When I turned it on it worked fine, the mic was keyed then the lights went dim and stayed dim. Now the lights remain dim. I checked the two output transistors...


The problem is with your power supply. There should be a big round transister on the power supply this is the power transister. It will be mounted to the power supply case. Replace this transister and try to operaste your radio again. Make sure that the power supply you use is at leat 7 amps or the radio will not operate properly and you will possibly blow the transister again.

Jul 16, 2011 | Radio Communications

1 Answer

IN POWER BOARD FUSE BLOWEN.FOUND MOSFET 2SK 3528 SHORT.NOW WHAT CAN I DO,HELP ME.


The power supplies on this sort of equipment is a safety item. All components that are replaced, and the manufacturers do not supply the components only a complete board, are critical for safety.
If the chopper transister has gone s/circuit, that was caused by an error in the drive waveform. It really is too complicated to explain on a site like this but a blanket change of the driver stage, output stage and control semiconductors will get you somewhere near to a working power supply.
Hope that helps.

Oct 30, 2010 | Toshiba REGZA 42WLG66 42 in. HD-Ready LCD...

1 Answer

When we turned on our large screen panasonic tv there was a pop, then no sound. The picture is fine. It is several years old. Not a flatscreen. Large speaker at the bottom.


It sounds like the power transister for the amplifier has blown. Inside, it is usually the largest transister connected directly to a heat sink. It will require the ability to solder (and unsolder) in order to affect the repair. Look up the transister from its code inscribed on the case to find a replacement. Power transisters are usually not very expensive. You can go to this link to see what a typical power transistor looks like.
http://innovision-group.net/catalog/index.php?cPath=1_37

Jan 26, 2010 | Televison & Video

1 Answer

Casio-ma150,main cirquet board-Q-4 transister deamage


Try emailing CO-Windler@Weltenschule.de. Also visit his website at http://weltenschule.de/TableHooters/index.html. Look at the TableHooters modification FAQ. He has some good info on circuitry and components. I hope this helps somewhat.

Apr 22, 2009 | Casio Music

1 Answer

50" Samsung Plasma with black screen


I had the same problem and had the TV serviced and found that the y board was blown $350 total. The repair guy explained that the board has a hot transister underneath that slowly leaked onto the board, but says that they can not get Samsung to admit to the problem. Works fine now but only have a 90 day warrenty on the parts.

Dec 01, 2008 | Samsung HP-S5053 Television

5 Answers

Help for TCL Brand of tv


I WANT THE SERVICE MODE CODE FOR MODEL NO: DP21E101 TCL TV 21"

Jun 15, 2008 | LG 30FS1D TV

1 Answer

Green Screen


check on crt board green amp transister and associated ckt should be short. or green drive transister,or main jungle ic which drive green signal is sure defective, i had the same problem in rca 32 inch tv for all screen red,replacing chroma ic solved the problem.

Sep 12, 2007 | Insignia IS 20" TV040919 TV

1 Answer

Red drained out of picture


The red transister on the CRT socket could be at fault. there is 3 transisters on the socket check for the voltages on all 3. If the red is high unplug the socket and see if it normal if not the transister or circuit feeding has a short. If low the same case seneral applies and a resistor feeding the transister is defective or the transister itself is at fault

Aug 28, 2006 | Panasonic CT-32SL15 32" TV

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