Back to working on Marantz 4300. Thanks to this site I have been greatly helped in getting the power supply, FM and AM sections up and running. I Installed amplifier boards with new outputs this morning. Thought I had thoroughly check everything but missed something. Powered it up and it smoked R745, R757. on the front right channel board. Burnt R745 on Left front board. Opened H713 on right board, Found both front channel R & L PNP outputs shorted and Both front R & L NPN outputs opened.
Can I power up reciever with outputs removed to make some checks? I would hate to quit on reciever now, to much money and time invested. Can anyone give some directions on what I should do next.
Thanks JC Guzzardo
Can I power up reciever with outputs removed to make some checks? I would hate to quit on reciever now, to much money and time invested. Can anyone give some directions on what I should do next.
Thanks JC Guzzardo
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