Orange AD200B Help needed.

eyeballkid · #1 07-15-2010, 08:45 PM

so i just picked up an Orange AD200B..
the fella i got it from said it had a bad tube.. (it had the 1+3 tube fuse lit to show that one of that pair had gone bad)

well, instead of the amp operating at 1/2 power, it makes very little sound and its sputtery when it does..

I replaced all four tubes and the fuse and it still sounds the same.. ie: very low sputtery signal, kinda like the sound you get if you keep playing your bass when you turn off a tube amp before all the power is out of it.

any ideas what it could be ?... i know this is precious little to diagnose a problem from...

I dont know if i should send it back, or if its a simple fix and i should just take it to a tech, or what..

any help is very appreciated.

johnk_10 · #2 07-15-2010, 09:28 PM

it's hard to say without looking at it, but when a output tube or two goes south, it can often take a screen grid resistor or two with them. if you're not familair with working on a tube amp other than changing tubes, you may want to take it to a tech.

it could be anything from some cooked resistors, to a dirty send/rec jack (in your case unlikely) to a blown output tranny (even more unlikely, but possible).

eyeballkid · #3 07-16-2010, 08:55 AM

so, it sounds like cheap fixes most likely?

johnk_10 · #4 07-16-2010, 09:02 AM

possibly.

BassmanPaul · #5 07-16-2010, 09:14 AM

A tube amp has a direct connection to your wallet. As soon as there is some money in said wallet, the amp goes wrong.

Take it to a proper tech and let him sort it out. The life you save could be your own.

Paul

eyeballkid · #6 07-16-2010, 10:26 AM

oh, there is NO WAY I do ANY work on my tube amps other than changing tubes and biasing when i can.... no worries on that...

Im mostly just wondering if this is something that can be repaired easily or if its big dice...

BassmanPaul · #7 07-16-2010, 10:58 AM

Without seeing the amp there's not a lot we can tell you. Your cost will depend on what your tech finds.

Paul

tony_clifton · #8 07-16-2010, 01:42 PM

If tubes go down the impedance the OT sees changes as well. Just saying it could be worse than a few tubes. -> tech!

johnk_10 · #9 07-16-2010, 01:44 PM

Quote:

Originally Posted by eyeballkid

oh, there is NO WAY I do ANY work on my tube amps other than changing tubes and biasing when i can.... no worries on that...

Im mostly just wondering if this is something that can be repaired easily or if its big dice...

it's impossible to tell without ALOT more info.

eyeballkid · #10 07-21-2010, 10:06 PM

My tech told me today that when the tube went bad it took 2 resistors with it... and all is now well!!... i pick it up friday and dammit Im anxious to get it!

tony_clifton · #11 07-22-2010, 02:13 AM

Glad everything worked out, enjoy that amp! Bet it sounds GREAT.

eyeballkid · #12 08-10-2010, 10:48 AM

it sounds IN-****IN-CREDIBLE!!

anonymous02282011 · #13 08-10-2010, 10:53 AM

Where do you get these in the US? Guitar center?

coreyfyfe · #14 08-10-2010, 11:12 AM

Any orange dealer can order one for you. In our area Boston Guitar Works (Brockton) and B-Sharp Music (Providence) are both dealers and can place an order, but they don't keep them in stock as they're not likely to be sold.

anonymous02282011 · #15 08-10-2010, 11:15 AM

cool. thanks Corey.

eyeballkid · #16 08-10-2010, 11:58 AM

musiciansfriend has em now.. but like most gear... i got it used.