[Dillen]

Put to work with any current to speak of – as in rectifier circuits, Schottky diodes can become quite unreliable, and they
will lose their Schottky properties.
They are meant for much finer workings, high-speed switching etc. That’s where they are fantastic.

Martin

[Dillen]

In FF and FR the capstans are not supposed to drive the tape but, depending on the situation and operation,
the tapehead bridge will load (partially) allowing for track sensing.

Sounds like the overload circuit is kicking in.
I see this all the time with Ebay belts, particularly from Portugal.
Are the belts correct for this model? Where did you buy?

Martin

[Dillen]

Bad reel table spindle?
See here:

Reel table pulley Beocord 2000 3300 5000 Beocenter 2200

This part can decelop a crack down its hexagonal spine, causing the trident to lock in a low position, not gripping into the tape reel.

Martin

[Dillen]

The “0” in 0TR1 suggest it is NOT fitted on a PCB.
It sits at the bottom of the Beogram.

The speed issues could be down to a faulty relay or trimmer.

But please consider if you are the right person to do this repair /these repairs.
You seem to be lacking experience and you seem to be guessing, neither of which will help.
Not performing the steps and diagnostic suggestions provided only adds to the mess.
With all respect, and I mean this in the best of ways. It’s not an easy unit to service, and definitely not one for a beginner.
You’ve already caused several problems that weren’t there when you started.

Martin

[Dillen]

Schottky diodes would make no difference to speak of.
And they have no place in power supply rectifying anyways, that’s not what they are meant for – or good for.

Check the filter capacitors – also any smaller ones sitting in the analogue circuits.

Martin

[Dillen]

Are your speakers MK2?
If so, the glasses seem to be very dark – perhaps they are in fact mkIII glasses.
See here:
https://www.dksoundparts.com/?s=penta+display+covers&post_type=product

Martin.

[Dillen]

Could suggest that the amp runs not symetrical.
Any DC on the speaker output?

Martin

[Dillen]

The other fuse lives at the back right side, on the board way down in the corner.

Martin

[Dillen]

Is the 8V present for the tonecontrol circuits?
If not, check 3TR4 (BC547B) and all filter capacitors related to the supply voltages in the preamplifier.

Martin

[Dillen]

Wrongly set tracking force?
Bad stylus tip?
Defective lamp or LDR for the tracking system?

Martin

[Dillen]

Basically the same drive as yours.
Note the remark about the nylon washer.

Martin

[Dillen]

Solder the old one out and solder a new one in.
Then do NVRAM reset as mentioned in the service manual.

Martin

[Dillen]

The wire goes under the cam wheel.
Its head slides under the metal plate found under the platter.

Martin

[Dillen]

The service manual shows how to adjust the black excentric.

Martin

[Dillen]

First thing would be to replace the backup battery and reset the settings.

Martin

[Dillen]

I am not as active here as I have been, I must admit.
Down from about a dozen posts a day to a few per month.
Discussions are now spread all over the net, which is a shame, I think.

I am not on Facebook. Never was and probably never will be.
I never visited Discord.
Every B&O enthusiast has his own forum now, it seems. Or Facebook page or Instagram or …or…or…
Having to visit hundreds of places to get information or help is frustrating and it is wasting time looking
everywhere instead of one place – and keeping track of where what happens, where did I ask the question etc. – oh no, it’s not for me.
Better to concentrate than to water out in my opinion.

We don’t have many dicussions about products within my scope of interest here.
I don’t care for TVs, I don’t care for video products more or less as a whole. I don’t care for home automation
and I have very little interest in apps.
I know next to nothing about the newer products, and I don’t service them.
I don’t feel the need to make things complicated – just for the sake of doing that – when it can be done simple.
I actually wrote a longer piece about this a while ago, but decided not to post it, as it was more or less just my own
reflections and not really particularly helpful.

Martin

[Dillen]

Check the idle current settings.
Check for DC on speaker outputs.

Martin

[Dillen]

Until a more elegant solution comes up.
The pin could be cut shorter.
Add a drop of glue to hold it in place.

Same applies for Beogram 1800, 2000, 5000, Beocenter 2200.

Martin

[Dillen]

Some versions have a fuse on the display board. Have you checked?

Martin

[Dillen]

You would need an FM-module,

either FM 5A:

or FM 6:

Both are immensely rare.

Martin

[Author]

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