#1
I recently snagged a Hughes and Kettner Warp X off eBay for a really good price. The seller ensured that the amp does indeed work--and of course, it's covered under PayPal purchase protections and such. However, when I try to fire it up, the lights come on, but no sound comes out, even though the tubes are glowing. Whenever I plug in my guitar, I don't even get the typical "bzzttt" that you would expect when plugging in a guitar to an "on" amp.

From the Warp X manual:

THE WARP X™ IS CONNECTED PROPERLY, BUT NO
SOUND IS AUDIBLE:
• The amp is set to STANDBY
• One or several GAIN and MASTER controls are turned
all the way down
• The anode fuse has tripped. Before replacing the fuse
with another fuse of the same rating, have the power
tubes checked to learn if they are defective.
• The fuse for the tube heater has tripped
(the tubes don’t glow). When replacing this fuse, make
absolutely certain that it is replaced with a fuse bearing
the same rating. Be sure to have a service technician
replace the fuse.

I can assure you it's not number 1 or 2, but how would I know based on the "symptoms" whether or not it's one of the other two?

Thanks in advance.
Fender Strat -> MXR GT-OD -> Lovepedal OD-11 -> MXR Black Label Chorus -> Mesa F-30

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Last edited by TehGainiac at Feb 10, 2015,
#2
That's the point, they want you to check the fuses to diagnose further. Do that first.

No point in playing the guessing game when you can get a definite answer.
#3
Quote by Roc8995
That's the point, they want you to check the fuses to diagnose further. Do that first.

No point in playing the guessing game when you can get a definite answer.

Would they have tripped in shipment if not connected to a power supply? (This, of course, assumes that the seller wasn't lying when he said the amp worked before shipment.)
Fender Strat -> MXR GT-OD -> Lovepedal OD-11 -> MXR Black Label Chorus -> Mesa F-30

Exclusively using V-Picks!
#4
Probably not. They may have blown when you turned it on, though, or come unseated during shipping. Same with the tubes. Re-seat both, check all the fuses, try again.