Question about Toshiba MV13P2 13 in. TV/VCR Combo

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Bad Transistor Traced power problem to bad transistor. Can't find cross for Transistor TT140.

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1-Source Electronics components
1-800-966-8826

Posted on Jun 25, 2008

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Pyramid power supply model ps-8kx started putting out 20 plus volts and the amps evidently dropped cause it will not power cb now when you key mike and no it's not a dual final radio


Sounds as though the regulator transistor/s have gone bad. Check these parts by taking them out of line(disconnect them from any wiring) and check for shotrs or opens with a transistor checker or VOM.
If I can be of any more help, please email me at wyoed1@aol.com. "Original Radio Man" Ed

Feb 12, 2013 | Radio Communications

1 Answer

My 1993 Plymouth gets no spark


You have a bad ignition power transistor ( this does roughly the same function as an ignition module) or a bad ignition coil. I would bet on a bad transistor....

Jul 11, 2012 | 1993 Plymouth Colt Vista

2 Answers

Power supply transistor transistor no. C4237 replaced 4 times. each replacement didnot sustain for a week. which transistor can i use instead.


I have worked to repair a few of these. When the transistor is burned, you most likely have a bad flyback transformer and bad picture tube. In this case you replaced this (transistor) component four times. This TV cannot be saved. Thanks for asking.

Oct 19, 2011 | JVC AV-24F704 24" TV

1 Answer

Picture is too large for screen


You did not specify a brand, or model number. In any case there is a pincushion problem. Sometimes a bad ground, or leaky diode in the horizontal section. It may be a bad resistor or retrace capacitor. It may be your switching transistor (NTE 2361, see cross references) next to the horizontal transistor. Could be an open coil etc. There are many possibilities. You must narrow it down in the horizontal deflection are of the TV main board. Sorry I cannot be definite in my answer. A TV tech always appreciates a brand and model number. Thanks for asking and show all hands of support!

May 20, 2011 | Televison & Video

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I am attempting to repair a Kustom K100A-1 guitar amp. I found one shorted output transistor, an RCA 36892, which crosses with a NTE 130. Do I need to replace all 5 outputs with matched transistors, or can...


I don't have a schematic for this unit, however good design would not demand matched transistors.
If a transistor has shorted, USUALLY mating transistors have been damaged. I am not sure how "5" outputs are configured as usually there is symetry and an even number. If the "5" are all on one side and there are mating trnsistors of another number, then likely there is damage to more components and probably back one stage in the drivers or even farther.
Hint: when re-powering this after repair, put a 100 Watt light bulb in series with the power into the unit to act as a limiting fuse that resets without driving heavy current into the unit causing more damage due to failed parts that were not eliminated in the first reapir.

Jan 06, 2011 | Music

1 Answer

I have Hitachi 43" hd rear projection tv - too much red


It's probably either a bad red CRT (the red projection tube) or a shorted (or open) driver transistor on the red CRT driver board. If it's the latter case (bad transistor), it can be fixed. If it's the picture tube, well, it's probably time to go shopping for a new TV.
Do you need more information? Do you want to fix it yourself? Do you have electronics knowledge and experience? If not, call a qualified electronic technician (TV repairman), and he can tell you if it's the picture tube or not.

IF (and only if) you are a competant electronic technician, CAREFULLY check and compare the voltage on the collector of the driver transistor on the 3 CRT boards. (The driver transistor is the large one, possibly connected to a heat sink.) The voltages shoud be somewhere around 140 to 160 volts. If the red one is significantly different from the green and blue ones, then it's probably the transistor. Unplug the set (and wait a bit), and check the transistor with a diode or transistor checker. If it checks bad, then you found a bad transistor. Go to NTE Electronic's website to find a replacement. If it checks OK, then you're probably looking at bad (shorted) red CRT.

Dec 12, 2009 | Hitachi 43FDX01B TV

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I HAVE APEX GT2015DV WITH HORIZONTAL OUTPUT BAD I NEED CROSS TO CHANGE IT I CANT FIND D2102 HORIZONTAL ANY BODY KNOW ANY REPLAC3EMENTO FOR D 2102 THNKS IN ADNVANCE


If it's transistor then, look for 2SD2102:
2SD2102 - SILICON NPN TRIPLE DIFFUSED LOW FREQUENCY POWER AMFPLIFIER - Hitachi Semiconductor.N Sabre

Nov 07, 2009 | Apex Digital Televison & Video

1 Answer

Transistor lost.


if you are replacing 7402
also replace diode 6404 this diode even thou it test goo will in long term overheat 7404 and caus it to go bad by leakage.
and if 7402 gose bad it is regulating the 15v stanby volts that is 7412 is also going to be bad so replace 7412 also
now
the part numbers are:
7402 = # 932211676682

7412 =# 932210514682


thanks,
daniel.

Jan 13, 2009 | Philips 19PR19 19" TV

1 Answer

Reads PROTECT on the display of my Onkyo TX-SV525 ???


HOWDY,         NOW YOU COULD TRY THIS ONE: POWER THE RECEIVER UP , THEN PUSH&HOLD !THE VIDEO 1 BUTTON, THEN TURN THE PIECE IN THE OFF (STANDBY MODE ) ,IT WILL SAY "CLEAR SO IT SHOULD BE BACK TO IT,S ORIGINAL FACTORY SPECIFICATION,S.

SUCCES !                              AMSTERDAMCOWBOY-HOLLAND-NOW FLORIDA! 4-EVER

Apr 28, 2007 | Onkyo TX-SV525 Receiver

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