Bottlehead Forum
Bottlehead Kits => Legacy Kit Products => Reduction => Topic started by: abaloghtesla on March 15, 2020, 07:32:13 AM
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I have been working on reduction 11 pre-amp. 120vac and i have run in some problems that i have fixed ie:shorted diode in high voltage power supplyand shorted capacitor betwen tst point 11 and 13. Once I get some parts and make a perm fix I will have all correct voltage reading as per chart except for test point 44 and 45----I am showing 80 volts for term 44 and 74.4 for 45 and not 180volts for 44 and zero for 45. I rebuilt term strip 43 to 48 with new parts after I found that shorted diode and all my voltage readings on term strip 55 to 62 are on the money. Question is:could that be a misprint of voltage of 180 and term 44 and zero on 45 to what i show now of 80v and 74 0 v for 44 and 45
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What caused the diode/capacitor to short? Did you have a diode installed backwards?
I am looking at the manual, and I see an indicated DC voltage reading of 0V for both terminals 44 and 45. If your voltages on terminals 55 to 62 are correct, I wouldn't worry about this.
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Its nice to have you get back to me. I did have a miss-wire in the high voltage section and that could have blown the diode, but I have no idea how the cap blew. It was part of a three cluster group and it was one of the group???? Once I get the spare parts I"ll let you know whats going on.