This unit has a few 4-amp. 'T' fuses in its PSU. Have they blown? If they have then the SAP15s will almost be S/C and that is a problem since they are now obsolete. Worth checking for O/C resistors in the emitters of the SAP15s and defective caps. in the PSU.
But the most important Q. is this, of course: why has the mains tx. gone O/C on its primary? Usually this is caused by a sustained S/C in the PSU or the 'wattful' parts of the amp.: viz. the O/P transistors.
Which neatly brings me back to the previous paragraph. Me? I'd tread carefully with this before committing any money on it and / or making 'promising noises' to the customer.
HTH,
Skywave.
But the most important Q. is this, of course: why has the mains tx. gone O/C on its primary? Usually this is caused by a sustained S/C in the PSU or the 'wattful' parts of the amp.: viz. the O/P transistors.
Which neatly brings me back to the previous paragraph. Me? I'd tread carefully with this before committing any money on it and / or making 'promising noises' to the customer.
HTH,
Skywave.
