||12th November 2006 08:22 AM
i have some pics of unwell pioneer
Here are some pics of the pioneer there are parts missing out of the board which i have done to test,i took all the relays out because the rapid clicking got annoying after a while.
The 2 grey resistors are okay,1.2 k and 1.8 k these drop the volts from 39 vdc to 30 vdc ,+ and - ,then they are drop again for preamp stages through the psu at the side of the 2 15000mf psu caps,preamp rails being +16vdc and - 12.5vdc.
there has been a repair on this amp before there are 4 teapo caps 10mf 100v which have been put in a zener diode by the side of the left psu cap was bust im guessing it is 33v because there is another on - rail.
All of these parts are in the supply to the left of the main psu caps,apologies for rubbish pics.
I really need some help on this one as soon as you press the direct button on front panel amp stays on.............
Any help would be fantastic.