There is a safety resistor R1 4,7 Ohms in the power supply for TR1... i have seen this defect already several times... If there is a mechanical overload of the drive it will blow. Especially if the motor is bad... check the motor on a regulated supply. There are caps INSIDE the motor... at least in the BC5500 drive, 7000 i dont remember right now... There is no 22V AC... it's just 22V DC unregulated. And if in standby without load there can be more than 28V? Maybe, should be ok.

Yes, the safety resistor was dead and has been replaced. sorry, I meant of course 22VDC !! Correct, the 27-28VDC are in Stand-By - ok, thats cleared up….when play is activated i get just under 22VDC. still missing the 12VDC for the drive as well as the 14.8VDC at P6-pin9 ?? i had the motor running on 12VDC with the benchtop power supply - no trouble. difficult to imagine the motor is at fault. i will look into the BC-435 and BC-136…other than those will cause a headscratch. ALF  

OK, safety resistor was dead... Then the LM272 control of the motor can also have a problem.

I look into it, but first I have to restore the 14.8VDC supply. the L272M mot control could still be fine but without the supply I couldn’t test. the BD 435 has to be ordered, unless I could use a BD437 as alternative ?? the same question is in regards to an alternative for the no longer available L272M chip ?? Any suggestions ? ALF

Ebay? L272M N8 around 50 offers, especially in GB. ~ 5-8$ BD437 is ok, 45V instead 35V... will work.

Right ?, just been there…nice shop. good to know the BD437 would work - I can get that one even here. the l272M are most likely chinese origin, sold in the UK, US and of course CHN the order is out ! ALF

Well, back on the BC7000: sadly no change after replacing LM272 - that drawer motor worked fine before. i replace the BD435 with a BD437 but what I can not get is the 12V supply for the capstan motor. the fuse resistor has also been replaced !! as said before, the motor works as been tested with my  benchtop VDC supply. i begin to wonder if the transformer got a hit during the “accident” ? It would be good to know what its typical VAC voltages are before hitting the rectifier diodes ? other than that I am stepping in the dark right now without progress. just such a shame that lovely deck doesn’t work. anyone, anything ?! ALF

Can we have DC voltage readings on TR1 and TR2 B-C-E respectively, with the Beocord out of standby? Martin  

Obtaining those voltages was  a bit tricky because the deck shuts back to standby fairly quickly after PLAY was activated: TR1:  B = 5.8 VDC,  C = 15.8 VDC,  E = 5.3 VDC TR2: B = 15.8 VDC,  C = 5.9 VDC,  E = 16.1 VDC are these voltages consistent with  proper functioning transformer  ? ALF