if that drek is in my workshop , I would find what's the culprit - without asking and replacing everything .....
that's just plain and simple preamp .......
edit:
with "everything" I meant on everything in PS section ; it certainly needs recap after all those years ....... and you have - what - few more parts , except caps ...
Going to order the defective parts (or replacements).
When replacing these I try to draw the schematic (have to pull the pcb out, didn' that already...).
And hope they will not blow up again....
well - you must confess that novice ( who is asking for schm of simple preamp ) isn't supposed to have ESR meter .... and I couldn't know in which condition they are .....
so - to rephrase my self - for proper repair of preamp - replace all broken parts .....
riadial caps tend to have significantly longer life rateings in general, I just hate the way they go when they do decide to blow, as there are no venting grooves.