Latest threads in Electronics Repairshow only best voted threads
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Why does a keyboard need to go to sleep.
Online I see for sale a wireless keyboard/mouse, and it says about it "Auto Sleep And Wake Feature This keyboard also features an auto sleep and auto wake mode. If there is a long period of...
13
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8 years ago
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What is that whiteish stuff on bad batteries (ruins stuff)?
What, chemically, is that whiteish crumbly powder on bad batteries? We all have seen it, and most of the time you can just brush it off, but I have it on a device deep inside that I can't get a brush...
46
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8 years ago
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46 | |
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learning to fly?
Hi Angus, For your trip, (f)light reading for Andre? John :-#)#
1
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8 years ago
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Marantz ST300 tuner
Hi, a Marantz ST300 arrived in good cosmetic condition and all lights working - but no audio from either AM or FM. Problem turned out to be the 28 pin IC at the heart of the unit has gone AWOL. It's a...
2
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8 years ago
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2 | |
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Sony KSS240A laser assemblies (heads)
I've got an Arcam Alpha 8 CD player with a somewhat tired laser, the player has started to skip on occasion and checking the RF (eye pattern) shows that the levels are a bit low. Cleaning hasn't...
8
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8 years ago
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8 | |
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video projector, lamp or high power ps problem ?
Hitachi CP X327, 3xLCD & discharge lamp, unusually the full component level sm is out there. As the lamp repeatedly strikes across giving short bursts of preliminary greenish light, the 5KV or so...
1
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8 years ago
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1 | |
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Radio Shack Model 277-1008 Mini Amplifier For Person with Disability: Where To Get Now >
Hello, Hoping someone here might know. Have been using a Radio Shack Mini Amplifier Model No. 277-1008 for many years to help out a person with a disability. Really important for them As no longer a...
11
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8 years ago
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11 | |
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lost one channel on an old Onkyo amplifier (2023 Update)
I have an old and extremely heavy Onkyo stereo amplifier that I use in the basement in my workroom. I bought it years ago at a thrift shop and it's worked well for years. Now only one channel works....
6
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8 years ago
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6 | |
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Clogged laptop heat pipe and fan
HP Envy m6 laptop (with AMD A10 processor), which arrive with a bad case of overheating. Here's what the radiator grill looked like after I tore apart the laptop to clean out the filth: That's about...
24
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8 years ago
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24 | |
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Vero GK60 trivolt PSU repair
Hi, The GK60 trivolt PSU takes a DC input (20V to 70V) and has three outputs (a ll adjustable), rated 5V @ 6A, +12V @ 1A, -12V @ 1A, max total 60W. Repaired two similar units, both with no lit LEDs....
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8 years ago
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DIODE confusion
I'm reading isolating 12V fields with a diode places the band toward ground but isolating ground leads past a power drop device from 12V isolates with band toward the device away from ground. is this...
10
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8 years ago
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10 | |
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Diode On Small dc Toy Motor: Why ?
Hi Folks, I'm not an EE, so would really appreciate someone educating me a bit on this. Trying to fix kids toy. Very simple electrically, just a battery going to one of those small, cheap, probably a...
6
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8 years ago
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6 | |
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Tropical Fish
Does anyone know how tolerant these are to over-voltage? For example, would one rated at 250V be able to handle 260V - 265V for a minute or so? thanks.
9
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8 years ago
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9 | |
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HP 339A Info
One has come in to our realm. We do some high end audio so having something like this desirable. It was bought surplus on the cheap. It is not dead, b ut I am pretty sure it is not working correctly....
20
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8 years ago
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20 | |
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Traco TXL 060-0533T PSU repair
Hi, I've just fixed one of these 60W power supplies. This has triple output (+5 V, +15V, -15V). Fault was -15V output gave -1V and +15V output gave +6V, LE D not lit. First saw that C37 (-15V...
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8 years ago
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