Revox B 226 S, problem to opening - diyAudio
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Old 13th October 2013, 01:02 PM   #1
beolit is offline beolit  Spain
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Join Date: Oct 2013
Location: Catalonia-Sabadell
Default Revox B 226 S, problem to opening

Hallo everybody!
I'm a new member on this forum from today, i'm from Spain, y name is Abraham amb i'm a passionate from sound and music.
I have slowly been compiling my home audio system, mostly equipped Revox, I really like this brand.
I have a notion to electronic and repair elements, in to my limitations!!

Now, i have a problem with a oppening in my Revox b 226 S.
When I give the order to open or close the tray respond but before reaching the end of its run total is like a continuous madness endless moves forward and backward in small and fast movements, only I help you with my hand ends slighly end. The same applies to the order to close.
All other functions manually when I get open and put the cd works perfectly.

attached a picture were you can see that view from the front, to the left is a wheel-guide where there is a groove but no gum, do not know if there should be, to the right if it is!

I would appreciate if someone can help me on how to repair this!

thank you very much
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Old 14th October 2013, 06:28 PM   #2
Mooly is offline Mooly  United Kingdom
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Welcome to the forums Abraham.

As to your Revox (nice player), the only things I can think of are a loading belt slipping (if it uses one) and tray in/out micro switches.

If you look at the pictures here it will show the kind of thing I mean,
Sony CDP790 and KSS240 Restoration Project
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Old 14th October 2013, 06:52 PM   #3
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Location: Belgrade RS
Originally Posted by beolit View Post
Hallo everybody!
I would appreciate if someone can help me on how to repair this!
Change belt with new one!

Regads zeoN_Rider
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Old 15th October 2013, 02:04 AM   #4
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Join Date: Oct 2006
That wheel, as memory serves, is just a guide wheel, but should have a rubber o-ring or belt around it as a pad/traction device. I don't quite recall if the lack of it will cause your symptom. The B226/226-S uses a gearhead motor with a cogged fabric/rubber belt, similar to an engine timing belt, so there is no chance of a belt slippage fault. The most common fault on these loading mechs is cracking of the cast metal guide track frame, causing obstacles for the tray guide rollers.
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Old 16th October 2013, 08:16 PM   #5
beolit is offline beolit  Spain
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Join Date: Oct 2013
Location: Catalonia-Sabadell
Default i'm gonna try!

Thanks for the guidance mate!

It is true that the belt, as you indicate, it's like car!! is in perfect condition.

It may be just the switch that fails in order to press?

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Old 28th June 2014, 03:11 PM   #6
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Location: Johannesburg, South Africa
I know this is an old post, but someone may come across it and have the same problem.

'Drawer madness' is caused by failing electrolytic capacitors on the +12v and -15V supply. 2200uF / 25V.
Under the heavy current load of the loading motor, the supply dips, causing all kinds of erratic behaviour.
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