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Messages - theaterguy

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1
Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« on: November 25, 2019, 02:58:06 PM »
For those it may concern; before anything, just try a short cable between send-return jacks.
Cheap&easy but some curiosity was left...

2
Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« on: November 15, 2019, 02:24:52 PM »
Thanks, I try that.

3
Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« on: November 11, 2019, 07:25:24 AM »
I believe that the OP is referring to the Foot Switch jack.

Yes and thank you.
The cable connected to the Foot Switch jack causes the buzz.

Following the ground from the TS/boost jack, it goes to ground via c55 but then same trace goes direct to chassis near the input jack. hmm...?




4
Amplifier Discussion / Ibanez TSA30 - buzzing
« on: November 10, 2019, 12:05:20 PM »
Hi all, my first post!

Recently I bought a used TSA30 combo, for the money it was a bargain (180€), me thinks.
Everything works fine except, amp randomly buzzes  when a cable is connected to TS/boost jack.
Twisting the cord can make it disappear and when it has been powered hour or so it rarely makes any noise.
Same buzz can be heard when touching simultaneous plugs sleeve and chassis.
Now this makes me think that signal ground and chassis is connected thru condenser and that should be replaced.
What do you think? And where would this component reside?

Let me make this one clear: It's not a bad cable issue. I tried it with several TRS cables and all those behaved as antenna. The footswitch  itself is not original but does it job perfectly, leds and all.

Thanks

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