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Radio servicing in Melbourne
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Return to top of page · Post #: 1 · Written at 6:06:19 PM on 28 September 2013.
	Jake Location: Richmond, VIC Member since 4 August 2013 Member #: 1389 Postcount: 11
Hi all, After much stuffing around, I'm just about out of ideas for my crackling left channel (as per: http://vintage-radio.com.au/default.asp?f=2&th=359). Before I start replacing caps, I was just wondering if anybody knew of someone in Melbourne who I might take my radio to take a more professional look? I'd rather someone who was familiar with vintage radios and amplifiers than someone who works on modern tube guitar amps or similar... any suggestions?

Return to top of page · Post #: 2 · Written at 7:08:56 PM on 28 September 2013.
	GTC Location: Sydney, NSW Member since 28 January 2011 Member #: 823 Postcount: 6803
Suggest giving the VIC branch of the HRSA a call on 03 9539 1117. Let us know how that goes.

Return to top of page · Post #: 3 · Written at 10:59:34 PM on 28 September 2013.
	MonochromeTV Location: Melbourne, VIC Member since 20 September 2011 Member #: 1009 Postcount: 1221
You could give Resurrection Radio a try. They specialise in '50's & '60's Radiogram repairs & restoration. Their address is: 251 Neerim Rd, Carnegie, corner of Truganini Rd & Neerim Rd. Ph: 03 9571 2304 http://resurrectionradio.com.au/.

Return to top of page · Post #: 4 · Written at 12:01:05 AM on 29 September 2013.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5474
It is not a good idea to double post on the same radio I have a feeling that there is one of those in my container among a mates & my collection of cast offs of them. At that vintage the caps are likely starting to fail & if you can't move the fault by valve jockeying one channel to the other then I would do a refit. The most likely to fail is the plate bypass cap on the op valve. Albeit that ones judges each device on its merit after looking at it. I do not bother fault finding in sets with old wax paper, oil filled caps and old electrolytic caps. More often than not they are the problem and you cannot fix the thing, if there is another problem, until you get rid of them. Valves can be tested elsewhere (tester). Marc

Return to top of page · Post #: 5 · Written at 10:58:37 AM on 5 October 2013.
	6A8G Location: Wellington, NZ Member since 24 July 2009 Member #: 517 Postcount: 63
I know it's a shot in the dark but I seem to remember reading in "From The Serviceman Who tells" that this sort of crackle could be in the O/P transformer? Although it didn't start soft & build up like the example in the MP3. It was intermittent though.... ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ 6A8G.

Return to top of page · Post #: 6 · Written at 4:03:40 PM on 5 October 2013.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5474
Yeh! and you might get a dart board with faults written on it. My experience with speaker transformers is that they are either dead, or alive. A plate bypass cap can cause crackle as can a valve, or a switch, not making proper contact. And several other things can as well. You just simply have no choice but to look for it. Marc

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