1, It does not see the record. There can be several causes for this but check the lamp position
in relation to the lens system inside the sensor arm. It should produce a reasonably well defined
round spot of light on the record, right under the lens system.
Check the signal from the opto sensor, with no record on the platter you should be able to
see the peaks from the dark radial streaks on the platter on a scope.
Still no luck, replace the lamp. They degrade with age and use and light output fades.
Still no luck, check the electronics related to shaping and amplifying the sensor signal.

2, The Beogram will not allow lowering the tonearm without a record. So back to bullet 1.

3, The tracking drive only works when the tonearm is lowered. So back to bullet 2 and 1.

Martin

Do you have any schematics or diagrams of the type 5523 control board so I can find the points to monitor the output of the opto sensor and locate the parts involved in the detector system. The  type 5513 Manual which also says it's for the type 5523 doesn't really have any useful schematics or diagrams.

Martin,

 I discovered the the tracking photo resistor bulb OIL2 had a broken lead. Would the open circuit from the broken bulb cause the detector circuit to be inoperative ?. I'm going to replace the bulb with an LED as described in the Condor Audio restoration article. If this would not cause the failure of the detector circuit, would you please advise where to connect the leads from my scope to see if the photo receptor in the detector arm is functioning and which components on the control board I should check/replace if the photo receptor is functioning correctly. 

The detector lamp appears to be correctly positioned and produces a reasonably round well defined spot of light on the record right under the detector lens system.

 Allan

I never replaced a tracking lamp with a LED and must admit I don't really see the reason but I suggest you ask the expert there. He is an experienced pro and will know much more about this than I.

Martin

Like Martin has suggested, you will not get the arm to track unless you can first get it to drop! However if there is a broken lead on the tracker lamp it is clearly not going to do much tracking, when you eventually expect it to. So, order a lamp from Martin, and in the meantime concentrate on getting the arm to drop, then you can worry about tracking! BTW the tracking lamp is generously-rated which is why you generally don't see failures, which IMO means an LED is a little bit OTT.

Hint: check (and this is off the top of my head) C23 or somewhere round that area ;)

BigAlT wrote:

Martin,

 I discovered the the tracking photo resistor bulb OIL2 had a broken lead. Would the open circuit from the broken bulb cause the detector circuit to be inoperative ?. I'm going to replace the bulb with an LED as described in the Condor Audio restoration article. If this would not cause the failure of the detector circuit, would you please advise where to connect the leads from my scope to see if the photo receptor in the detector arm is functioning and which components on the control board I should check/replace if the photo receptor is functioning correctly. 

The detector lamp appears to be correctly positioned and produces a reasonably round well defined spot of light on the record right under the detector lens system.

 Allan