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Beogram 4002 sensor not detecting anything/tonearm not lowering

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beonsay
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beonsay Posted: Sun, May 17 2020 11:06 PM

I have my father's old beogram 4002 that was found a few years ago in a shed where it had been unused sitting for many years. It worked straight away with no issues. However, a couple of years later, the house was hit by lightening while it was plugged in, and straight afterwards, it stopped working. Not sure if that's the cause as nothing else seemed to be affected, but seemed like more than a coincidence due to the timing.

After an initial look, my father and I could not diagnose the problem and put it away. At that time, as far as I remember, the issue was that the arm would go across as normal, it would detect the record but the tonearm would not lower.

Now, out of storage again, it seems it is not detecting records at all and again, the tonearm will not lower. The movements seem very sluggish too, though it has just been lubricated again so that could resolve after a few spins I'd imagine.

I don't have a lot of electrical knowledge, my father does but can't figure this one out. Has anyone here dealt with a similar problem? I'd be very grateful if you could point us in the right direction.

Alternatively, if we are completely out of our depth, does anyone know of anywhere which might repair it in Northern Ireland or somewhere relatively close?

P.S. I can post a video if it requested

sonavor
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Texas, United States
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sonavor replied on Mon, May 18 2020 1:00 AM

Hi,

I might say you are probably a little lucky that the Beogram 4002 still worked after a long time in storage. It is a tough turntable though. Still, electronic components don't do well stored away unused. 

The lightning strike sounds scary. I would think you could see some evidence of its wrath inside the Beogram but perhaps it just spiked the line enough to take out some transistors.

Aside from the weather your Beogram is forty years old. It requires a restoration for sure. This post I made six years ago covers several of the Beogram 400x turntables. It can be used to show the type of issues you can encounter during a restoration. 

Another link with really good information (including some instructional videos) are on the Beolover Blog site.  For the Beogram 4002 specifically check here.

I am sorry I can't help you with doing the restoration but there are plenty of capable folks in the Beoworld Workshop Forum.

-sonavor

beonsay
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beonsay replied on Mon, May 18 2020 4:00 PM

Hi sonavor,

Thanks for the reply, I'll take a look and see if I can service any of it myself. Thanks so much for taking the time to put all this up, it's very kind of you!

sonavor
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sonavor replied on Mon, May 18 2020 5:14 PM

Sure, glad to help.

-sonavor

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