sonolink
Well-known member
Hello
I have converted a Fender Pro Junior to p2p. Before firing it up for the first time I'd like to check that the Power Supply section is ok. This is the original schem:
So I thought of doing the following steps:
1-wire PT to mains through fuse and switch and check that the Tx is working and secondary voltages are correct.
2-wire Bridge Rectifier to transformer. Leave B+ unconnected and ground the other pole. Check voltage of B+
3-wire filter caps and bleed resistor and check voltages
Just to clarify, this means running the Power Supply without any load.
4-I would then connect the Bias supply circuit to one of the Bridge Rectifier poles (where the TX is connected) and check its voltage to ground.
If everything checks ok I would then connect the rest of the amp's circuit.
Makes sense?
Thanks in advance for your help
Cheers
Sono
I have converted a Fender Pro Junior to p2p. Before firing it up for the first time I'd like to check that the Power Supply section is ok. This is the original schem:
So I thought of doing the following steps:
1-wire PT to mains through fuse and switch and check that the Tx is working and secondary voltages are correct.
2-wire Bridge Rectifier to transformer. Leave B+ unconnected and ground the other pole. Check voltage of B+
3-wire filter caps and bleed resistor and check voltages
Just to clarify, this means running the Power Supply without any load.
4-I would then connect the Bias supply circuit to one of the Bridge Rectifier poles (where the TX is connected) and check its voltage to ground.
If everything checks ok I would then connect the rest of the amp's circuit.
Makes sense?
Thanks in advance for your help
Cheers
Sono