hello everyone!
i exchanged all caps on this about one or two years ago and everything was working fine since then. until last week.... the deck started with problems not speeding up to 33.33 rpm, 45 still worked, then it worked fine again for one day, meanwhile it doesn´t move at all, just the coil (the outer one) makes a loud humming and after a while the fuse next to the transformer blows.all voltages coming from the voltage regulations are correct.
first i renewed the transistors 0tr2 and 0tr3 next to the coils and the two diodes there. no improvement, then i checked all solder joints on the edge connectors and resoldered them - no improvement. then i recognized the the transistor ( ithink it´s a BD 438) on the small outer surplus pcb went hot and renewed it - nothing changed.
what do you think would be the best next step? changing the transistors involved in the steering of the coils or is it more likely, the coils get the wrong signals from the main ic?
thanks for your help!
any ideas are very much appreciated...
greetings from a now sunny and warm munich!
jens
p.s.: when i unplug the leads going to the coils of course the fuse wont blow, as it´s the coils which are drawing to much power... i measured resistance over the coils and it is similar to the coils on my Beogramm 8000 (yes i confess: i´ve got this as well, as i always have to buy it, when i see a nice piece, which is not working and needs some help... that´s kind of a sentimental disfunction [:'(] )
