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Old 17th Feb 2018, 9:57 am   #17
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: RA 1772 power supply heat

The sets are considered too good to break up. They get fixed instead, and they can be fixed. There are some fancy bits of test equipment where people with the knowledge to fix them at component level are too thin on the ground and you find those broken up. There are things with specialised and unique parts. If they fail, the remaining bits tend to migrate to Ebay as people try to recover some of their money.

The RA1772 is too good to break up. It's built out of what were standard parts at the time, The unique parts are the metalwork and the transformer. Transformers can be rewound. The OBIC LED digits may be the hardest parts to find. The receiver is overall, quite complicated, but it divides up into understandable sections. Added to this is a decent-quality service manual with diagnosis procedures as well as functional explanations.

So, the unavailability of spare boards for RA1772s is good. It's a result of them being fixable and worth fixing.

Best start a new thread, so that the forum structure stays neat.

David
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