Radio Repairs

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rupertknapton
Posts: 1
Joined: Wed May 02, 2012 12:06 am
Your interest in the forum: Own a 1951 Jowett Javelin
Given Name: Rupert

Radio Repairs

Post by rupertknapton »

I recently puchased a Motorola 828 radio on ebay, with the intention of fitting it to my Javelin, but unfortunately it does not work. Got a rebate from seller, but still have the radio. Does anyone in the club have experience of repairing old radios or possibly know of someone that does. Alternatively, might there be a company out there that exchanges non-working radios for refurbished ones?
Thanks for looking.
Rupert
Tony Fearn
Posts: 1743
Joined: Thu Feb 09, 2006 5:33 pm
Your interest in the forum: Early pre-wars. Owner of 1933 'Flying Fox' 'Sarah Jane, and 1934 Short saloon 'Mary Ellen'.
Given Name: Anthony
Location: Clayton le Moors, Lancashire, the Premier County in the British Isles!!

Re: Radio Repairs

Post by Tony Fearn »

Hello Rupert, and welcome to JowettTalk.

My friend BG in Chorley has a friend who repairs radios. I will send you BG's number by Private Message. I don't know his friend's details, but he's exhibited at the Beaulieu National Autojumble for some years.
Tony.
David Kemp
Posts: 628
Joined: Sun Mar 09, 2008 1:18 pm
Location: Brisbane ,Australia

Re: Radio Repairs

Post by David Kemp »

open it up, put on power the carefully prod each component with an non metallic prod, your finger is a good choice.
most old radios fail due to circuit board cracks or solder cracks. In my youth many a radio was repaired in this manner, many ended up with cardboard jammed between components to keep them running. Crude but effective.If it has been sitting in a coastal area ,spraying with WD40 or other electrical spray can do wonders.
Good memories of Bradfords.
Alf Heseltine
Posts: 135
Joined: Mon Nov 30, 2009 11:24 pm
Your interest in the forum: To discuss Jowett info etc
Given Name: Alf
Location: Redcar Cleveland

Re: Radio Repairs

Post by Alf Heseltine »

Rupert ,the Motorola 828 was a quality car radio I remember working on back in the 60's . They were introduced at the time when many cars started to use Neg. Earth
& the '828' could accommodate both Neg. or Pos. earth by internal links adjustment, directions sometimes given inside the case.

If the radio has been connected wrongly, the fuse in the supply lead fails. If the supply fuse fails & you are certain the polarity is correct then the chances are it's a
protection diode in the Power Supply Circuit or maybe a power transistor in the Output stage, ...it was some time back.

Hope this might help.

Alf.
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