Latest threads in Electronics Repairshow only best voted threads
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Pearl Octaver foot pedal query
schematic here (440 K ) anyone happen to know what the function of the circuit around the transistor Q2 in the extreme bottom right is about ?...
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14 years ago
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DIY RF amp?
Occurs to me that I could use a small RF amplifier to improve my DTV reception (it's marginal on some stations, PITA to constantly readjust my indoor antenna). So how about a reeeealy simple DIY amp?...
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14 years ago
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Feck!! New Pan HDTV has developed line of stuck pixels!! Fixable?
I bought a 32" Pan LCD 1080p TV set from NewEgg abt 2 weeks ago Today I turned it on and noticed a very thin "line" down far right side! Anyway to fix myself.... or am I stuck sending it back to...
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14 years ago
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6 | |
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How to make a radio
I want to make a simple radio(reciever), without using any IC and by capacitor, inductor, transistor, diode and other simple electrical device Would you mind telling me how can I do that. Have you any...
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14 years ago
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MPA-31
KIA6280H Find diagram here :
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14 years ago
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Realistic DX 100 receiver
I need a transformer marked L7 on the board, the markings on the side of the can are as follows oc- 101 A 16 JT
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14 years ago
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TV channel sound from a different channel
Hi, I have a RCA ColorTrak 2000 TV. A few days back, one specific channel, ESPN suddenly started using background sound of CNN. So now even if I can see ESPN, the sound is of CNN channel. Can anybody...
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14 years ago
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Fluke 12 Multimeter Display Problem
Hi, Back in 1995, I bought a Fluke "12" Multimeter (digital) because of a special feature (Max & Mim) it has. I have not used that meter often over the years, unless I needed to use that special...
10
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14 years ago
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LCD H - Lin ...?
Little bit OT in that it's not any item that's on my bench, or ever will be ... Just returned from a trip across the pond, and the return aircraft was a B-767 - the crappy dash 200 model with overhead...
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14 years ago
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PM 3055 scopes do not power up
Someone asked me about these oscilloscopes. Apparently he has a dozen of them that do not power up. No display or backlight on the LCD. Yes, AC power is set correctly. I haven't seen them so don't...
5
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14 years ago
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casio cz-1
Hello, Does anyone have a service manual or schematic for this keyboard? I have the book for a 101, but it is substantially different in the area I'm trying to troubleshoot and I'm rather lost at the...
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14 years ago
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Scott LK150
This beast is back on the bench for a cleaning and tune-up. The internal caps have been done long since, it is now about time to tackle the power-supply properly and cleanly - a task I have postponed...
2
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14 years ago
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RCA chassis CTC187CL3 AY will not power up.
When you plug in the AC you can hear a slight high freq osc start so I think that the SMPS is OK. There were no shorts around the HOT. I did find some bad gounds and at least one fairly serious ring...
2
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14 years ago
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CTX CHP1797/EX710F Monitor Repair TIP.
I have a color monitor CTX EX710F. If I replace 2SC5411, J449 transistors it works for about 10 minutes, then these components fail again. It has a wire labeled [A] which comes from the mainboard and...
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14 years ago
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Singer model 513 sewing machine problems
This machine most of the time sews fine except that on some ocaisions intermittently it will bunch up the thread underneath the cloth. I removed the bobbin case and noted that there are two small...
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14 years ago
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