Hello everyone,
I recently acquired a L58A, with the right channel down.
After testing the mosfet, one of the 2 2SK134 tested bad:
I tried finding for 2 pairs of 2SK134/2SJ49 , not an easy tasks.
I decided to replace them with 2 matched pairs of ECF10N20/ECF10P20.
While the specs are very similar the input capacitance differs.
Anyway, i would like to have your point of view on this replacement.
Will it be a drop in, or do i need the change the value of the resistor R273 and the cap C704 before the mosfet.
thanks a lot for your time!
Etienne
I recently acquired a L58A, with the right channel down.
After testing the mosfet, one of the 2 2SK134 tested bad:
I tried finding for 2 pairs of 2SK134/2SJ49 , not an easy tasks.
I decided to replace them with 2 matched pairs of ECF10N20/ECF10P20.
While the specs are very similar the input capacitance differs.
Anyway, i would like to have your point of view on this replacement.
Will it be a drop in, or do i need the change the value of the resistor R273 and the cap C704 before the mosfet.
thanks a lot for your time!
Etienne
Well---yes they will work but the new ones are Lateral mosfets .
I recognise the old ones and used them they are Vertical mosfets .
It must have been a major fault to destroy the original Hitachi V-mosfets in TO3 build ,the worst I got one to suffer from was overheating due to a slight error in compensation when building an amplifier to my own design ---it still worked only it blackened.
I recognise the old ones and used them they are Vertical mosfets .
It must have been a major fault to destroy the original Hitachi V-mosfets in TO3 build ,the worst I got one to suffer from was overheating due to a slight error in compensation when building an amplifier to my own design ---it still worked only it blackened.