5500 master ctrl panel round dial repair?

[ummagumma]

 

Hi, the round spinning dial on my master control panel 5500 has stopped working. All other functions & buttons work. I opened it up & tried 99% iso swabbing the 2 contacts that touch, when the dial is spun either direction, but it didn’t make any difference.

 

Thanks for any advice!

[Guy]

It could well be a faulty (or dirty) opto-coupler – have a look at this thread (and the pictures attached to some of the posts):  https://archivedforum2.beoworld.org/forums/p/22025/182754.aspx#182754

Location: Warwickshire, UK

My B&O Icons:

[ummagumma]

Ah: found this thread on the archived forum, looks like it’s the microswitch as the unit doesn’t respond when I spin the dial:

 

https://archivedforum.beoworld.org/forums/t/35687.aspx

[ummagumma]

Oh, thanks! I was researching & found that other link too, replied while you posted. Will check it out!

[Author]

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