Latest threads in Electronics Repairshow only best voted threads
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push pull transistor pairs
Hello, Is there anywhere a list of generic transistor/darlington for AF push pull output stages from eg 10 W to 100 W in the different configurations. I have to repair some amplifier but do not find...
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8 years ago
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9 | |
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Power adapter for Hercules speaker system DOA.
I was given a Hercules XPS 2.140 Slim speaker system. The owner purchased it new from Amazon and it never worked. It sat around longer than the return period so I inherited it. The problem is that the...
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8 years ago
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CPU fan has become noisy, but a problem....
The problem is that I can't seem to remove it and also, after seeking out websites suggesting lubrication a small hole, which I don't seem to have, I am unable to lub it. The way the fan is attached...
10
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8 years ago
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10 | |
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Project 165
Hi, a few weeks ago, the issue of output valve matching was raised by NG regula r Trevor Wilson in a post relating to the Peavey Classic 60. In a subsequent post he mentioned the AVO VCM163 - the last...
1
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8 years ago
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Where you electronic waste goes
must see video bob
3
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8 years ago
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Ev SX300 speaker problem
In for a horn problem, but also loose bits inside rattling around. These are 2 coppery looking monkey metal flanges from the speaker bolt "hank" bush/anchors into the plastic. They seem non...
2
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8 years ago
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2 | |
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Pad-lifting
Hi all, Anyone got any tips on how to avoid the unpleasant situation where you try to de-solder a part on an elderly board and end up removing more than just component leads? Most of the stuff I work...
37
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8 years ago
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37 | |
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Tektronix 2215A B Delay Time Position not working
Hi: Am trying to fix a Tek 2215A with the delayed sweep not functioning properly. I am able to see both A and B sweeps but am unable to use the B Time delay position. Anyone have an idea? Thanks
1
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8 years ago
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OT: Audio:Free to Good Home - but with Two (2) "Catches"
First, the Stuff: Pioneer SX780 Receiver: Turns on and tunes for perhaps 20 seconds, not all the time and passes no sound. Complete, cosmetics are fair, no visible damage. My SWAG is power-supply...
5
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8 years ago
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I have a Robbins Myers motor serial #MM30358 Type KL need wiring diagram
3/4 HP Frame M560
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8 years ago
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Vivitar 283 repair?
I have some Vivitar 283 flashes I used several years back in lower power mode for a special application (I swapped out the thyristor for a circuit that allowed 1/16th power). The flashes were...
2
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8 years ago
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2 | |
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Revox B251 Integrated Amp No Output and More
Before I dive in blind, here are the symptoms: This amp, which had worked nicely at our summer house (seasonal use) for 4 years died one evening - slowly going quiet over about 30 minutes (I was dr...
9
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8 years ago
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Samsung ln40b530p7 audio ok backligth intermtitent
At the time of turn con picture and audio are normal and aprox 15 secs late r backligths do not ligth con so no picture. I checked voltages at the psu/ inverter and all seems to be the inverter...
2
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8 years ago
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2 | |
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Samsung ln40b530p7 no imagen audio ok
At the time of turn on the set picture and audio normal, anterior 10 sec no picture and backligths are Off, chkd voltajes and readings are normal, resoldered without good result. Any ideas about it....
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8 years ago
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Curious problem
Hi all, I'm now working on a different Philips scope which 'died' suddenly for no apparent reason. Here's a summary of the key points: The smps section had power in, but nothing coming out. I checked...
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8 years ago
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