Hello,
In trying to repair a PV-8.5c amplifier I have found that the current limiter transistors are blown and I cant find exact replacements.
For Q102 can a 2N2222A work suitably?
Also for Q103 can a 2SB561 work suitably?
Looking at the data sheets the substitutes seem to be fine but I need some confirmation.
Schematic is here: PEAVEY PV-8.5C SCH Service Manual free download, schematics, eeprom, repair info for electronics
Thanks,
Lawrence
In trying to repair a PV-8.5c amplifier I have found that the current limiter transistors are blown and I cant find exact replacements.
For Q102 can a 2N2222A work suitably?
Also for Q103 can a 2SB561 work suitably?
Looking at the data sheets the substitutes seem to be fine but I need some confirmation.
Schematic is here: PEAVEY PV-8.5C SCH Service Manual free download, schematics, eeprom, repair info for electronics
Thanks,
Lawrence
The MPS6531 is
The amp must have suffered a catastrophic failure as they have no current path feeding them!
The only path is through a pair of 1N4148 diodes or 3k9 resistors which will certainly have blown in this case.
- Collector-Emitter Volt (Vceo): 40V
- Collector-Base Volt (Vcbo): 60V
- Collector Current (Ic): 1.0A
- hfe: 90-270 @ 100mA
- Power Dissipation (Ptot): 625mW
- Current-Gain-Bandwidth (total): -
- Type: NPN
- MPS6533 is PNP
The amp must have suffered a catastrophic failure as they have no current path feeding them!
The only path is through a pair of 1N4148 diodes or 3k9 resistors which will certainly have blown in this case.
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