A bad solder weld on a reverb pot can cut the volume.. you need to check the solder welds on all the pots and jacks. then move on to the grounding resistors, they look like sugar cubes, and are usually 300-500 ohm 3-5watt. those usually have cold solder welds and need to be resoldered. you can email me thru my website yostamplifier.com if you need further assistance. from there i will look into the schematics and help you fix your amp....via email.
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A bad solder weld on a reverb pot can cut the volume.. you need to check the solder welds on all the pots and jacks. then move on to the grounding resistors, they look like sugar cubes, and are usually 300-500 ohm 3-5watt. those usually have cold solder welds and need to be resoldered. you can email me thru my website yostamplifier.com if you need further assistance. from there i will look into the schematics and help you fix your amp....via email.