[Storck]

PROBLEM SOLVED:

I was about to give up, but as a last desperate attempt I removed the RAFOC-unit. I didn’t wanna do this at first since I didn’t wanna mess with the angle setting.

Anyway, after removing it, cleaning it, and dipping the two bearing balls in silicone oil it works like a charm!

Thank you so much for your suggestions and help Die Bogener and Dillen.

[Storck]

The search continues…

It works more or less reliably in vertical positions.

I found one video with the same problem, but he just replaced the focus unit.

 

[Storck]

I removed and cleaned all ribbon cable connections, also ohm-measured from the servo board to the solder points on the swing arm with good results.

 

[Storck]

I tried to remove the clamp  – same problem.

It’s not a issue with the Disc drive motor. In service mode 3 the disc spins perfect and quietly regardless of how and where i push/move/angle the unit.

The noise must come from the swing arm/laser.

I just can’t see what possibly could be effected by pushing the back of the unit down, nothing seems to touch anything, and the swing arm moves without friction either way.

[Storck]

I just did some more troubleshooting,

The tracking force seems to be right, 1,19g (measured with a jewelers scale).

It randomly skips/repeats the groove, maybe every 20-30 seconds. I can’t see any obvious reason why and the tonearm seems parallel to the sensor arm the whole time, even when it skips.

New problem: Twice now it stops playing by itself and resets the arm and turns the beomaster to standby. First time after 3min and second time after 10 min.

[Author]

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