Latest threads in Electronics Repairshow only best voted threads

Subject Author Posted Replies
 
Protron PL32 TV short?
Story so far: Was given a PL32, - the one with the endemically bad power adapter, - without a power adapter. Bought a new one to test the TV. Plugged it in and ac plug shorted relatively badly when...
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Soligor AR-20 Ring Light
Hi, I have a Soligor Auto Ringlight AR-20 with one of the "standby" lamps dead. These look to be just wheat germ bulbs. But, they are located *behind* the flash tube. Any pointers as to what to be...
 
Panasonic VP-5720A oscilloscope freezed
Hi, I have a old Panasonic VP-5720A DSO that power up but keys is locked and CRT display nothing. I have try to disconnect deflections (plus removed "SCOPE" board) and CRT display one big center dot,...
 
Concertone ZX75 car audio system
A friend of mine has just bought himself, and imported here to the UK an American RV. It is fitted with a Concertone ZX75 car audio system. There's one problem with the FM radio tuner, it only tunes...
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Hot knife
Hi, [Obviously, the weekend has been spent disassembling and repairing/replacing a variety of "toys" :-/ ] What tricks can be brought to bear disassembling plastic items that have been solvent welded...
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Benq FP737S LCD monitor backlight - won't go off (longish).
Received a Benq Q7T3-FP737S for repair, symptom no backlight. These are notorious for inverter failures. Schematics at Found PF751 open, FETs Q743/751 OK, D751 OK, Q739/740 OK, and one of Q759/760...
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DVD/ STEREO SYSTEM: bridge rectifier question
I've just 'fixed' a dvd/amp/stereo all in one made by the world famous Sunstech :-p ( model hf-dv55m ; manual and details here ) Unit was dead, on power up some garbled text appeared in the display....
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Tabbed battery replacements
Hi, Replacing rechargeable battery packs in consumer kit is a bane I suspect most of us share. You can't "solder" to individual cells. And, you usually can't slip a battery holder in place to make the...
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Voltage Regulator 041M03
Can't find any info on this device. I need to know what the output voltage should be. I'm assuming 3 volts, but would like to know for sure. It is getting red hot on the circuit board and is...
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B&D FireStorm 24VDC Batteries - DIE QUICK!!!!!!!!!!!
I have a great Black & Decker 24VDC FireStorm Hammer Drill that works GREAT. The problem I am having is within the first few months, one battery wouldn't hold a charge. So I got a spare but now I have...
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Projection TV dies if plugged in and OFF for a while...HUH?????
I have an 61" RCA projection TV model P61939 that woke up dead one day, just made a popping sound from the speakers when I unplugged it and plugged it back in. Couldn't get power to come on ir...
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Is there any easy way to get a tv test pattern on my tv?
Is there any fairly easy way to get a tv test pattern on my tv screen? Not the color bands but the circle. The vertical doesn't seem linear. It has a built in VCR and I have a DVD player. And a...
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LCD inverter
Hi everyone. I recently got a 22" LCD monitor which has a bad backlight inverter.. It is a Phillips LC200WX1 which is part of an all in one PC. This monitor has 5 CCFL tubes in it. The inverter itself...
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Refrigerators that stop working when it's cold?
Hello all... I bought a secondhand fridge (a Franklin Chef FCD401BL) a few months ago for use in a house where I am only storing stuff. This fridge uses R134A refrigerant. The heat in the house is...
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OT: That Air France Airbus ditching , plus a near miss
A sort of "blue skies" thought experiment repair scenario, makes a change , previously discussed here submerged into thread "Post mortem on an IEC connector", June 2009 Now a second airbus A330 , fly...
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