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1
Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« Last post by theaterguy on November 15, 2019, 02:24:52 PM »
Thanks, I try that.
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Schematics and Layouts / Re: Schematic sites for different brands of amps
« Last post by Jazz P Bass on November 14, 2019, 11:48:19 AM »
Have you attempted to contact Rocktron?

http://www.rocktron.com/contact.html
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Schematics and Layouts / Re: Schematic sites for different brands of amps
« Last post by bluesman59 on November 14, 2019, 06:19:30 AM »
Great compilation of links but I am still trying to find something for a Rocktron Replitone. Would anyone be able to point me in the right direction?
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Amplifier Discussion / Re: Info on Sunn Stinger 100 amp
« Last post by Diablo_IV on November 13, 2019, 12:38:27 PM »
never mind, I believe i need a 40 vct secondary transformer.   If anyone could tell me what amount of amperage i may need to power this amp that would be great.  I see some transformers with 40 vct but with only at .06 amps. 
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Amplifier Discussion / Re: Info on Sunn Stinger 100 amp
« Last post by Diablo_IV on November 12, 2019, 10:35:53 AM »
thank you guys, so yea im going to replace all the filter caps. The transformer looks toasted and only puts out about 14vac where i should be getting 19 or 20.  When dealing with winding ratios do we divide 120 by 20, or 110 by 20?
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Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« Last post by phatt on November 12, 2019, 08:52:26 AM »
This might help;
https://www.ssguitar.com/index.php?topic=4011.0
Read second post by Bajaman.
Cheers, Phil.
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Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« Last post by theaterguy 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...?



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Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« Last post by Jazz P Bass on November 10, 2019, 06:07:15 PM »
I believe that the OP is referring to the Foot Switch jack.
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Amplifier Discussion / Re: Ibanez TSA30 - buzzing
« Last post by DrGonz78 on November 10, 2019, 02:58:37 PM »
Welcome to the site  :dbtu:

Well here is the schematic... Please look at the components where there is a capacitor between signal ground and chassis. Please let us know which caps on the schematic so we might have a better way of visualizing what you are thinking about that one. Also, I am confused by " amp randomly buzzes when a cable is connected to TS/boost jack" since all I can see is there is a boost switch but not a boost jack.

Anyway we know there is a random buzz occurring and that you twist some cable to make the buzz disappear. Which cable is this one? The Input cable from guitar or cable for footswitch?

Schematic>>>
https://www.ssguitar.com/index.php?action=dlattach;topic=4011.0;attach=6242
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Amplifier Discussion / Ibanez TSA30 - buzzing
« Last post by theaterguy 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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Ibanez TSA30 - buzzing by theaterguy
[November 15, 2019, 02:24:52 PM]


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Info on Sunn Stinger 100 amp by Diablo_IV
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