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Ranch 55, your information and explaination is very helpful to me. I will take my time and double check everything very carefully as I proceed. Any parts I do not have I will purchase and make certain they are correct. When I get this done I will let you know how I make out.
Much appreciated Sir!
Thank you for the great information. It is very helpful to a novice like myself. I will put a new battery connector on so I have more wire to get to the front of the PC board. When I get it soldered I will let you know how I make out.
Thank you so very much for your help and patience.
loosecannon. Just to try and clarify this. I should solder the new battery connector to the back side of the PC board on the same pins that correspond to the front side. Positive wire to pin 8 and negative wire to pin 9 at their respective solder connections? Thanks
Hi loosecannon. Bare with me here. Solder the battery negative lead wire to pin 9 on the back side of the PC board? The 5K adjustment pot you refer to. I do not recognize it. Does it have a screw type adjustment like many pots do? Just trying to learn here about this mic.
I found no continuity from pin 9 from front to back of board for the negative. No sign of solder pads either. I think the trace to the pads may have pulled out. So very small! How can I repair the trace? Did get continuity on positive so I reattached red wire. Just need to deal with negative.
Sorry I did not see your message right away. My bad. The 5 watt wire wound resister gets too hot to touch in a few seconds. All resistors wqere replaced with ones of equal values. All 4 final power transistors were replaced with toshiba 2879s not fakes that you get from ebay. I do not have...
Hi Loose Cannon. I was able to resolder the positive battery lead after cleaning the old connection that was pulled out. I used a solder sucker to get the old solder and wire out of the hole. I got continuity and resoldered the positive lead. I did not have the same luck with the negative lead...
Hi Ranch55. I am not well schooled in electronics. If you could show me on a diagram where to check the DC voltage on the outboard end of the transformer that would help. Also can I check the power transistors for power on the collectors without removing the transistors? And where to check the...
Thank you this information and drawing. Much appreciated. I will use this to try and pin the issue down. Any idea why the 25 ohm 5 watt wire wound resister on the left front side of the amp gets so hot? the one on the right side does not.
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