Latest threads in Electronics Repairshow only best voted threads
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How much power used when device is Off.
I hope you all can explain this to me. Let's assume we have an AC adapter with only a small number of parts, a step-down transformer and 1 to 4 diodes. Let's assume that the primary of the adpater...
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14 years ago
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Cordless Phone batteries are all junk?
I would like to know if my cell phone battery situation is of general nature, or perhaps I had very unusual bad luck. We have a Uniden cordless phone system that works very well, except that original...
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14 years ago
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Cerwin Vega Sub Woofer -- buzzy distortion
I have a Cerwin Vega HT-S12A subwoofer that has begun making an electronic distortion. The speaker itself seems fine when I do a push pull and tap -- no voice coil rub. Just putting my hand near the...
22
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14 years ago
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STR-DE698 Receiver Frequently Turns Itself Off
I have a STR-DE698 7.1ch receiver that started turning itself off recently. I suspected heat as the cause, so I moved it out of the enclosed cabinet and into an open one. I also set it on top of a...
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14 years ago
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OT: Why do people shout into mobile phones?
Won't happen. In the handset, between the microphone and the A/D converter (CODEC) is an AGC (automagic gain control) circuit with considerable dynamic range. No matter how loud one yells into the...
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14 years ago
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There's a result then ...
Following on from my request earlier in the week for a schematic set for a NAD cassete deck that was an urgent repair for Christmas, having not come up with any diagrams, I decided today to fling it...
18
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14 years ago
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WTB: Beta VCR Head Puller
Does anyone out there still have a Betamax head puller? I need to change the head on a Sony SL-2700, my VHS head puller won't fit and there's no other way to extract the head without damaging...
1
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14 years ago
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Motion detector
My yard light won't go off any more. I block the detector wait 60 seconds and I hear the relay click off but the light now stays on when it used to go off. It clicks again when I block the detector,...
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14 years ago
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Data Sheets ...
Here's a resource that I came across today, and hadn't seen before. Seems to have a vast amount of semiconductor data sheets on the site. Arfa
1
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14 years ago
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1 | |
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robbins myers motor wiring
I have a Robbins Myers motor 1842405031 KLM330b0ll It is 1/4 hp 110v ac with 3 wires Blue Yellow Red and requires a capacitor 460-525 mfd. No wiring chart and I can't figure out to hook it up. Tried...
17
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14 years ago
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PCB track fault - infuriating one
Intermittant cutting out of an amp , something to do with the uPC1237HA protection IC. Number of control inputs (o/p DC fault sense etc) that takes o/p low of main speaker relay which clicks over. In...
8
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14 years ago
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DMM TENMA 72-7755 failure when cold
Hello everybody I've found an issue with my DMM TENMA 72-7755. When external temperature is below around 10=B0C it doesn't power on : LCD begins to lit on but finally slowly stops and the DMM doesn't...
2
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14 years ago
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What is it?
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14 years ago
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Solartron 7150 plus LCD & Circuit Diagram
I have a Solartron 7150 plus that had a faulty LCD display. I pulled it out of it's socket in case it was just a bad contact, but one of the epoxied metal pin contacts fell off. After fixing and...
1
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14 years ago
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LPC quad UART garbling 8th bit in TX data - difficult to reproduce - any ideas?
Dear Everyone, apologies for cross-posting, I'm wondering if some of the veterans of 10-15 years ago are still reading these USENET groups... I'm sending this problem description just in case the...
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14 years ago
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