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Post subject: Need Help with my Champ 600
Posted: Fri Aug 05, 2011 12:06 am
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Hobbyist
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Joined: Fri Aug 05, 2011 12:02 am
Posts: 2
Hi everyone, hope someone can shed some light on my little dilemma. I bought my Champ 600 brand new a couple of weeks ago, and I cannot stress how much I love it.
However, not a week went by and the little guy shut down in mid playing session (about 35 to 45 mins into it), and wouldn’t come back on. Volume was kept at about 8-10. It didn't show any signs of trouble before this happened. It did get pretty warm, but it's my first tube amp and I don't know how normal this is or how warm is normal. The next day it was still dead, so naturally I took it back to the shop, but when the tech guy had a look at it, it all worked fine (of course!). He looked inside and said to have checked absolutely everything and that nothing was wrong with it, as I could clearly see, and he plugged in a guitar and gave it a test run.
So...
I get back home, and (of course!) it does it again, shuts down just 5 mins into my playing session, but this time, it comes back on almost instantly. The rest of the playtime went without any glitches (1 hour aprox.).
That same evening got together with some friends and out came the Champ (which I display very proudly!), and as to be expected it did it again. However this time it gave more clues (or at least I think that’s what they were) as to what the problem is. It did it twice and both times the volume went down slowly until the red light went out.

I love my Champ and I really want this relationship to work! Can someone please advise what the cause of the problem might be (because the tech guy seems to be out of ideas).

Together with the Champ I was using:
Cort Z-Custom
iPad with AmpKit, Amplitube and GarageBand
AmpKit Link
iRig
Cort Noiseless cables
Generic cables


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Post subject: Re: Need Help with my Champ 600
Posted: Fri Aug 05, 2011 1:42 am
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Joined: Fri Aug 05, 2011 12:02 am
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Thank you for the suggestion. [http://www.ultimate-guitar.com/forum...#post27822079]
Went inside to check the tubes and they appear to be quite steady, no rattle or lose feel, but like I said, it is my first time with tubes. As I was testing to see if I placed the tubes back correctly I encountered something interesting. When I fliped the switch on the light flickered for a moment, switched it back off and this time I slowly fliped it towards the on position, when I was aprox 3/4 of the way the amp powered up and stayed on as long as I kept it there. To further test this I went all the way (from the 3/4 position) and it stayed on, however a small tap to the switch made it go off.
Regretfully when I tried to replicate this a second time it did not work. No flickering, no nothing.
Does this mean that it's the switch? or some other power related issue? Can I discard the tubes as a possible culprit?

Thank you.


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Post subject: Re: Need Help with my Champ 600
Posted: Fri Aug 05, 2011 2:55 am
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Joined: Fri Feb 05, 2010 4:31 am
Posts: 14049
Location: Province de Québec, Canada
It look like a bad connection or solder. Return to see your tech . This is normal that a tech did not see the first time the problem if intermittent.


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Post subject: Re: Need Help with my Champ 600
Posted: Fri Aug 05, 2011 5:44 am
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Aspiring Musician
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Joined: Fri Dec 12, 2008 5:32 pm
Posts: 329
Sounds like a bad solder joint.With amps like that just redo them all,if the joint is not obvious


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Post subject: Re: Need Help with my Champ 600
Posted: Fri Aug 05, 2011 8:15 pm
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Rock Star
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Joined: Sat Jul 03, 2010 2:18 pm
Posts: 6544
This is the Champion 600 RI? I agree with the other posts, it's prolly solder point(s). From your symptoms it sounds like it could be in the heater (green line) circuit. Or maybe the fuse holder. That's what I'd check first.

http://support.fender.com/schematics/gu ... ematic.pdf


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Post subject: Re: Need Help with my Champ 600
Posted: Sat Aug 06, 2011 2:34 am
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Joined: Fri Feb 05, 2010 4:31 am
Posts: 14049
Location: Province de Québec, Canada
Thank's for schematics BMW. I don't think to see Fender.com very often. I print it .


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