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Hoffman Amps Forum image Author Topic: Fender AB763 Reverb One Channel Eyelet board  (Read 17875 times)

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Offline EL34

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Fender AB763 Reverb One Channel Eyelet board
« on: March 31, 2015, 08:28:34 am »
A customer of mine asked for a one channel Fender style AB763 Reverb eyelet board.
That board and other fender style eyelet boards can be found on this page
http://hoffmanamps.com/MyStore/catalog/EyeletBoard.htm

The Normal channel has been chopped off the regular AB763 reverb board
It is 12 inches long
The diagrams below show what parts have been eliminated
I moved one eyelet over to the left so that it is in line with the eyelet below it for V2 pin 3 (now it is V1 pin3)



« Last Edit: April 06, 2015, 08:35:53 am by EL34 »

Offline Tweeds

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Re: Fender AB763 Reverb One Channel Eyelet board
« Reply #1 on: April 04, 2015, 06:52:20 pm »
Nice, I was thinking about this very thing a few months ago, like if I ever built one of these, why bother with the dry channel, and maybe just plug the control holes, etc.  But nice for custom build for sure.  Are there anymore "X" connections or can I leave the one eyelet blank hole down on the far left "X" (by the "Y") and delete the 220K R that feeds into that bridge connection?

Offline EL34

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Re: Fender AB763 Reverb One Channel Eyelet board
« Reply #2 on: April 04, 2015, 07:15:33 pm »
Not sure what you are asking?
Take the diagram above and draw on it so I know what you are asking

Offline Tweeds

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Re: Fender AB763 Reverb One Channel Eyelet board
« Reply #3 on: April 06, 2015, 08:08:34 am »
Thanks, it's directly below the word "One" in your board title,

the
  • eyelet(220k Resistor) next to the [Y].


Thanks

Offline sluckey

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Re: Fender AB763 Reverb One Channel Eyelet board
« Reply #4 on: April 06, 2015, 08:25:00 am »
Quote
...can I leave the one eyelet blank hole down on the far left "X" (by the "Y") and delete the 220K R that feeds into that bridge connection?
yes
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline EL34

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Re: Fender AB763 Reverb One Channel Eyelet board
« Reply #5 on: April 06, 2015, 08:26:21 am »
I was typing at the same time  :icon_biggrin:


If you only have one channel, then you do not need the 220k channel blend resistor for the normal channel


Offline EL34

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Re: Fender AB763 Reverb One Channel Eyelet board
« Reply #6 on: April 06, 2015, 08:32:04 am »
So someone this morning asked me about AB763 without the normal channel and without Tremolo

Here's a couple diagrams with those parts circled


 


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