|Solid State Talk all about solid state amplification.|
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|13th June 2012, 09:51 AM||#41|
Join Date: Jun 2012
Location: near Florence
first of all I ask sorry for my English...
I hope someone help me, I read along this trehad, but I not found what solve ( or try to do ...) my problem.
I buyed for some buck the 1.5t.
Is really damaged, but whit a lot of patient and much more time, time after time I soved the problem the are front to me.
Started whit the ampli board now I'm stocked whit the regulator board.
I',m not have the original transformer but a couple of toroidal (from the beginning are inside and seems installed from a qualified person).
I discoverd the Triac and the oc1 fused.
the diac are ok, the diode are ok, the resistor ok.
Changed triac and oc1,
but I have this problem : i read that the diac have to fire at 40 volts, and so the triac have to open from that voltage, but this not happen.
Infact , using a variac, at 25 volts the diac fires, and the same do the triac, and the trnasformer start to work.
And, also, more volts give to the ampli, more volts going to the trnasofrmer, seems the regulator no regulator nothing
Do you have idea what is the firing voltage at the triac ?
and (in the manual are not present) what is the exact model of the oc1 ?
tks and regards from Italy!-
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