what is wrong with my uberschall?

[Emperor Guillotine]

this sounds like a faulty cap that's there for filtering.. a good amp tech should be able to fix this. Unless there's a PCB with a cold solder joint that does this, which takes forever to find. A friend of mine had a similar problem as he did not use his amp regularly and only fired it up once in a year literally, some of the caps dried out and stopped doing their job. let me know if you ever find out what the problem was. As the filtering caps charge the oscillation would add up in quicker cycles and then after a while the amp would sound.. normal... I suspect you will have a problem each time you let the amp sit for a while and then when it stabilizes, once you power it off and back on again it will sound ok (due to caps still being charged)

This is probably it. Could always just open the chassis up yourself and see what is wrong. (Dust things off while you're in there.)

 

[lol]

So far no noise. Maybe I need to use it more often ? Id use it more if it wasn't so brutal. Lol. I'mback to the ol classic rock jazz type stuff. I don't mind doing some digging around, safely of course. I'd trade it for something else but Iwant make sure its tip top before i let her go. The intermittent noise is irritating. If its a cap wouldit be wise to do a full recap or just replace the ppossible faulty cap/caps?

 

[maddnotez]

So far no noise. Maybe I need to use it more often ? Id use it more if it wasn't so brutal. Lol. I'mback to the ol classic rock jazz type stuff. I don't mind doing some digging around, safely of course. I'd trade it for something else but Iwant make sure its tip top before i let her go. The intermittent noise is irritating. If its a cap wouldit be wise to do a full recap or just replace the ppossible faulty cap/caps?

An uber a day keeps the butt rock away.

 

[Emperor Guillotine]

If its a cap wouldit be wise to do a full recap or just replace the possible faulty cap/caps?

Yes. Might as well just do a full recap, right?

Now throw a boost in front to test it out (referring to your post in the other thread).

Never tried my uber with a boost. I like gain low, MV high, channel volume to taste. Tight and sexay

 

[lol]

Hahaha I just did! I used my tube screamer. I gotta say, I was impressed with the tone. I was expecting some fizziness but it just got tighter and no fizz at all. Just straight up tight brutal metal tone. Too bad the doom band didn't work out.. Would have been fun

 

[maddnotez]

Hahaha I just did! I used my tube screamer. I gotta say, I was impressed with the tone. I was expecting some fizziness but it just got tighter and no fizz at all. Just straight up tight brutal metal tone. Too bad the doom band didn't work out.. Would have been fun

If you do get it to the tech might as well have him add a bias switch so you can use some hot KT88's.

 

[SLOgriff]

Take some contact cleaner and spray the loop in/out inserts, and put a cable in and out right after. Cleans the jacks, I've had similar issues with old JCM 2205 and Jubilee loops.

This could be the issue....did you try this yet?

 

[lol]

Hahaha I just did! I used my tube screamer. I gotta say, I was impressed with the tone. I was expecting some fizziness but it just got tighter and no fizz at all. Just straight up tight brutal metal tone. Too bad the doom band didn't work out.. Would have been fun

If you do get it to the tech might as well have him add a bias switch so you can use some hot KT88's.

I was always intrigued by kt77s and 6ca7s. Closest to kt88s I got were the 6550s in my super bass. Can't imagine the low end on this amp with kt88s o.o

I have no tried contact cleaner. I'll pick some up today though. I have to do some shopping. Lol. So far the amp has not been acting up. But I'm going to keep messing with it the next couple of days before I relist for sale

 

[lol]

Well the loop issue seems to be resolved. however the noise is still there every time I initially power it up. guess its not going anywhere for a while. as much as I'd like to list for sale locally, its gotta go to my tech yet again. probably for a recap. sigh. time to sink more money into the thing.