parallax power supply 7345ru parts PWM
My 7345 is not charging the coach batteries but does supply 12power to all accessories. The transformer, fan and relays work fine. Think i need a PWM circuit for it. Contacted PP tec support and th...
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Those units are very easy to repair
A cap hidden behind the large heat sink (missing in the picture) is normally the problem.
Nice units can be run with or without a battery - not the fancy multistage unit but a wonderful 12 DC source for the shop. To date I guess I have repaired 50 or more of that exact unit never more than $5.00 in parts for each repair. Check the resister pack as well they tend to burn the PCB. Repaires to the board usually include adding some wires.
Good luck with the repairs
A cap hidden behind the large heat sink (missing in the picture) is normally the problem.
Nice units can be run with or without a battery - not the fancy multistage unit but a wonderful 12 DC source for the shop. To date I guess I have repaired 50 or more of that exact unit never more than $5.00 in parts for each repair. Check the resister pack as well they tend to burn the PCB. Repaires to the board usually include adding some wires.
Good luck with the repairs
