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Gain potentiometer Tiny Terror

Posted: Mon Oct 15, 2018 10:42 am
by CQJR1962
Hi, i'm looking to buy a replacement potentiometer because my gain knob is still scratchy after a cleanup..

Where could i order that part ??
Thanks !!

Re: Gain potentiometer Tiny Terror

Posted: Mon Oct 15, 2018 10:53 am
by Sooner
If you're in the US, email derron@orangeamps.com. If he can't help try ebay...

Re: Gain potentiometer Tiny Terror

Posted: Mon Oct 15, 2018 1:40 pm
by CQJR1962
Thanks, i'll contact him :)

Re: Gain potentiometer Tiny Terror

Posted: Mon Oct 15, 2018 10:00 pm
by fiveightandten
CQJR1962 wrote:
Mon Oct 15, 2018 10:42 am
Hi, i'm looking to buy a replacement potentiometer because my gain knob is still scratchy after a cleanup..

Where could i order that part ??
Thanks !!
What product did you clean it with?

www.mouser.com is also likely to have a direct replacement. You'll have to measure the lead spacing to find the right part. It's a dual ganged 500KA.

Re: Gain potentiometer Tiny Terror

Posted: Tue Oct 16, 2018 1:19 am
by Sooner
Have fun replacing one of those dual pots. If your TT is the same as my AD15, the solder is on the same side of the PC board as the pots (instead of on the back side). When I replaced my master pot it was a huge PITA to get the old one off and then I overheated and damaged the new one trying to solder it back on. I wound up mounting the second new pot to the chassis and hard wiring it to the PCB. Next time I'll replace it with a quality pot instead of the cheap mini jobs they come with.

Re: Gain potentiometer Tiny Terror

Posted: Tue Oct 16, 2018 1:21 am
by Sooner
fiveightandten wrote:
Mon Oct 15, 2018 10:00 pm
You'll have to measure the lead spacing to find the right part. It's a dual ganged 500KA.
It's probably a standard 16mm PC mount spacing. Shaft length is important too... :P

Re: Gain potentiometer Tiny Terror

Posted: Sat Oct 20, 2018 10:05 pm
by Les Paul Lover
Before swapping the pot, I would urge you to swap the V1 12AX7/ECC83 for a know working clean valve.

Some dodgy valves can leak DC voltage, which can result in scratchiness when turning either the volume or gain pot. It's been associated with the volume pot in the past, but I would think swapping V1 for a known working other valve is much easier than swapping the relevant pot. It may still be the pot, but I would try to eliminate that possibility 1st.

Re: Gain potentiometer Tiny Terror

Posted: Sun Oct 21, 2018 12:38 am
by Jondog
Sooner wrote:
Tue Oct 16, 2018 1:19 am
Have fun replacing one of those dual pots. If your TT is the same as my AD15, the solder is on the same side of the PC board as the pots (instead of on the back side). When I replaced my master pot it was a huge PITA to get the old one off and then I overheated and damaged the new one trying to solder it back on. I wound up mounting the second new pot to the chassis and hard wiring it to the PCB. Next time I'll replace it with a quality pot instead of the cheap mini jobs they come with.
Really need solder wick or solder sucker. Add some flux to help it flow. Also can use a heat gun carefully when theres little solder left on all the pins and it’s still stuck a little.

Re: Gain potentiometer Tiny Terror

Posted: Sun Oct 21, 2018 3:26 am
by Sooner
Jondog wrote:
Sun Oct 21, 2018 12:38 am
Really need solder wick or solder sucker.
My solder sucker didn't fit. A wick might work better.