BeoGram

Re: Beogram 4000 - Doesn't move across

Step1 — Sat, 21 May 2011 16:34:09 GMT

Sorry I seem to have sent you on a bit of a goose-chase there... I would check that the on switch is actually doing it's job by checking continuity otherwise you really will have to follow the fault chart & diagram I think...

Re: Beogram 4000 - Doesn't move across

anagnost — Sat, 21 May 2011 15:35:34 GMT

I moved the carriage by turning the screw as you said and then plug-in, but absolutely nothing is happening!

Of course if I press again the [33] key then the plate rotates and the strobe light flashes.

@filip_kgh

The fuses are fine!

Re: Beogram 4000 - Doesn't move across

Step1 — Thu, 19 May 2011 17:22:32 GMT

ok try carefully advancing the carriage by turning its screw wheel, say, to just before the start of a 33 record (you can do this without a record or cartridge ideally!) and then plug in, see what happens.

Lights? Main motor? Anything?

Re: Beogram 4000 - Doesn't move across

filip_kbh — Thu, 19 May 2011 15:39:53 GMT

Maybe it's a blown fuse? They are placed under the greyish plastic cover in the left upper corner.

Re: Beogram 4000 - Doesn't move across

anagnost — Thu, 21 Apr 2011 15:06:49 GMT

Hello Olly,

and thanks for the reply.

When I press the [ON] key, absolutely nothing happens. On the other hand when I press the [33] key then the plate rotates normally.

I already have the service manual of the deck and I have checked the fault finding chart. Unfortunatelly my knowledge on electronics is very limited and I have stacked.

Can you tell me where is this transistor H bridge located? How can I check if this is working properly?

Thanks in advance

Vassilis

Re: Beogram 4000 - Doesn't move across

Step1 — Thu, 21 Apr 2011 13:43:37 GMT

I assume all other signs of life seem ok? What happens when you press the [on] key.

I always look at the transistor H bridge (the four metal-can transistors with accompanying drivers) if the motor shows no signs of life. It is a good place to start! if they are ok then check control signals, supplies etc but this deck is a complicated beast and not the best project to start if you are initially stumped!

The service manual has a good fault finding chart so join up and download!

Beogram 4000 - Doesn't move across

anagnost — Tue, 19 Apr 2011 13:39:24 GMT

Hello all,

after a a period of some months, I tried to play some records on my Beogram 4000 with no success.

The tone arm does not move across! I removed the aluminium plates and I saw that the motor doesn't turn. I measured the voltsge on the cable motors and is 0 Volts?

Do you have any idea about this?

Thank you very much in advance.

Vassilis Anagnostopoulos

Beogram 4000 - Type 5215 - No 215498