Beogram 8002 motor control issues

6 replies
AL
Offline
alf
Bronze
Posted May 18, 2022 at 03:13 GMT
#1640863
Hi All,

working on my Beogram 8002 which decided to die over night ?!

no Standby LED, nothing….

After a complete recap the unit partially worked again:

when Play is activated the carriage moved to the 33 to 45 switching point and stopped.

STOP wasn’t working but only the manual ‘in function’ (<<) was working.

checked the motor control circuit (1TR3 and 1TR4) - acc to the service manual

1TR4 = PU51 transistor ! What I found was a dead MPSW 51 transistor instead ?

I ordered a Pu51 but was wondering if there are equivalent types I could use ?

advice would be greatly appreciated.

ALF
Mark-sf
Offline
Mark-sf
Bronze
Posted May 19, 2022 at 00:42 GMT
#1646780
95GU55 or 95GU56 should work fine as replacements for the PU51.
AL
Offline
alf
Bronze
Posted May 19, 2022 at 02:25 GMT
#1646781
Thanks Mark,

i will take that on board (if I can find one!!!)

perth isn’t exactly a semiconductor hub.

ALF

 
MO
Offline
morgan_mad
Bronze
Posted June 3, 2022 at 22:59 GMT
#1647039
The part PU51 is for sale in Beoparts shop.

Location: Shrewsbury

K.Parker
AL
Offline
alf
Bronze
Posted June 4, 2022 at 02:48 GMT
#1647041
Thank you for the info - part has been ordered 3 weeks ago - still waiting……!

ALf
AL
Offline
alf
Bronze
Posted June 13, 2022 at 06:57 GMT
#1647191
Hi All,

still waiting for the Beoparts order…..in the meantime after some research I decided to replace the faulty 92PU51 transistor with a M BD 508 type which is working fine.

The motor control function is now fully restored and the Beogram is back in business

thanks to all interested members.

ALF
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