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  1. Replies
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    Thanks for your input. I will read into this more...

    Thanks for your input. I will read into this more and look forward to what the next PRRI will measure. The amp actually sounds really good after correcting some minor stuff and customer is happy with...
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    I guess this IS normal for this design, so never...

    I guess this IS normal for this design, so never mind. https://www.youtube.com/watch?v=IjAVqBRT92g
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    This guy has a this exact circuit described....

    This guy has a this exact circuit described. Everything seems normal except my grid measures 21V not 55V (meter error??) https://www.tdpri.com/threads/fender-cathodyne-phase-inverters.755580/
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    Fender 68 prri

    v4 pin 6 is this cathodyne phase inverter supposed to chop off the top of the wave form on the positive side? it doesnt do it to the negative side. seems odd to me and I dont see a lot of these. It...
  5. You nailed it, Thats exactly what the owner did....

    You nailed it, Thats exactly what the owner did. Sounds pretty good too.
  6. https://scontent-iad3-1.xx.fbcdn.net/v/t1.0-9/6505...

    https://scontent-iad3-1.xx.fbcdn.net/v/t1.0-9/65051827_1336828606464660_1358441247408128000_n.jpg?_nc_cat=107&_nc_eui2=AeH7Xs7Vi2M_p6WqFYUlOO4tewhATy7jy3mz7Ons7R45yR7pJQraOGZqDAEUezoiFRzcvu9JllqdJau-s...
  7. Looking for schematic for Fender Bantam AB763

    V1 is a EF86
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    ITS THE BLACK GOOP. The new replacement modules...

    ITS THE BLACK GOOP. The new replacement modules use a white glue and they stopped dumping over parts for no reason.
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    MESA triple rectifier

    whats the latest sub for VTL5C9
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    Thanks! I would have never guessed G or R series...

    Thanks! I would have never guessed G or R series is this amp.
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    Rivera fifty five twelve

    Anyone have this schematic? TIA
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    turned out to be corrosion on the RCA jack on the...

    turned out to be corrosion on the RCA jack on the tank.
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    Seems your right AB tank seems to work just fine.

    Seems your right AB tank seems to work just fine.
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    The one thats in the one on my bench is from a...

    The one thats in the one on my bench is from a fender twin. I know THATS wrong.
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    Anyone happen to know which reverb tank goes in...

    Anyone happen to know which reverb tank goes in these?
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    yes, in essence they are wired in parallel. I...

    yes, in essence they are wired in parallel. I think Im going to remove one of them
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    R52 is there on the PCB its 2K7/2W

    R52 is there on the PCB its 2K7/2W
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    Im working on a V4 that has the R53 3K5w mounted...

    Im working on a V4 that has the R53 3K5w mounted on the PCB AND a 3K10w mounted on the strip, which isnt shown on the schematic glued to the lid. Seems like it should have one or the other but not...
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    I got mid 60s on the cathodes, on the one on my...

    I got mid 60s on the cathodes, on the one on my bench.
  20. Thread: EV SXa250

    by clintronics
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    299

    Well thats good news, they used to tell all non...

    Well thats good news, they used to tell all non war centers tough luck.
  21. Thread: EV SXa250

    by clintronics
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    299

    EV SXa250

    I dont have an EV parts account. Where else can you buy gain mic control and gain master control?
  22. Those gray IC (Illinois Capacitor) caps are junk....

    Those gray IC (Illinois Capacitor) caps are junk. I replace them whenever possible. I've had so many strange problems disappear after replacing them.
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    Thanks for the warning on mixing up the trim...

    Thanks for the warning on mixing up the trim pots. I was planning on setting the lower bias with the upper completely removed. I would measure the voltage using two wires I solder to the bottom and...
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    I am repairing one of these today. One...

    I am repairing one of these today. One observation is R28,R29,R30,R31,R136 that all burned up are all 1/4W resistors, but the latest version of the schematic has upgraded them to 1/2W now. There are...
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    I put a 1n4746 18V in the ZD101 slot and got 39mA...

    I put a 1n4746 18V in the ZD101 slot and got 39mA plate current
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    I just did an Egnater the other day. Check the...

    I just did an Egnater the other day. Check the four big diodes closest to the power supply transformer. I had one that was shorted on mine.
  27. The 4 screws on the front of the horn fooled me,...

    The 4 screws on the front of the horn fooled me, Most cabs have all the screws remove from the back
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    Thank you for posting that about input switch

    Thank you for posting that about input switch
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