Anybody,Anybody ? [message #22168] |
Mon, 19 January 2015 19:05 |
oneeye
Messages: 3 Registered: January 2015 Location: United States
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Junior Member |
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I have a KGA65. Everything worked fine. One day the effects, would not play. I have a Kustom footswitch.
That used to work ,very well.I tried running it without the footswitch. It still doesn't work.
The footswitch will change the channels but has no effect on the effects. I have tested both the cable.
and the switch with a meter. and they read fine. Disconnecting the footswitch,make no difference, to
any effects turning on. The buttons on the amp will switch channels. but the effects,will not come on.
It did this before,and fixed it's self for a while. I have unplugged it for a few days. Tried powering it up
with the effects switch in both positions. Foot switch in and out.Beginning to get irritated, because everything
else is just fine. I am a fairly decent technician. So Even complicated help is welcome.But simple is better.
Thanks
Jim !
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Re: Anybody,Anybody ? [message #22173 is a reply to message #22168] |
Tue, 20 January 2015 01:12 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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Welcome to the place.
Your amp has digital effects, probably on one chip. If the problem is intermittent, then I would look to see if any of the connectors on the FX board are loose, or if the front panel switch is working or if the footswitch jack is making good contact.
If you want to try mechanical troubleshooting, give the amp a good slap on the top with your hand and see if the FX come back. If they do, then you know that there is something loose inside that needs to be fixed.
You say that you are a good tech, so I will assume that you know how to work on an amp that is plugged into the wall and know how not to kill yourself trying to fix it.
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Re: Anybody,Anybody ? [message #22179 is a reply to message #22168] |
Tue, 20 January 2015 13:25 |
stevem
Messages: 4772 Registered: June 2004 Location: NY
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Senior Member |
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With bad connections and or intermitants a blow dryer set on low and some cooler / freeze spray can be your best friend, but with the schematic at hand you should have no problem tracing the signal thru the amp!
[Updated on: Tue, 20 January 2015 13:26] Report message to a moderator
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