Thread: Standard C510 in permanent Tx
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Old January 8th 14, 10:09 PM posted to rec.radio.amateur.homebrew
Dr. Oliver Welp Dr. Oliver Welp is offline
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Default Standard C510 in permanent Tx
Am 01.01.2014 16:42, schrieb :
I have purchased a second-hand Standard C510 hand portable. It has a fault; as soon as it powers up, it gives 4 rising pitch tones, and permanently transmits, and displays 433.00MHz. None of the buttons do anything, apart from giving DTMF. All I can achieve is to switch it off again. Does anyone have any ideas if it's in a weird mode, or how to fix this?


It probably is the same fault as the C520/528 use to have: the
electrolytic capacitors are getting old and finally loosing their
liquid. The liquid spreads on the PCB (might not be noticable if you
just open the case and look at it) and causes short-circuits resulting
in the permanent TX.

There are repair instructions (and even repair kits) available on the
net (sorry, only have a German version here). Basically, you have to
replace those capacitors and clean the PCB after unsoldering them.

HTH. Good luck!

73s from Hamburg,

Oliver (DL9QJ, N3NSF)
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