[Monsterzero]

Did you flip the correct switch in the back?
Theres a gain switch as well as a power switch.

 

[ProtegeManiac]

the power adapter is plugged in

If you bought it new, send it back and get it diagnosed and/or replaced.

If you bought it used, check the markings on the AC adapter. It might look like what comes with the Magni but the specs might be different. For one, the Magni has to take in AC power from the power brick, unlike most amps that have their power bricks outputting DC.

 

[andreartiz05]

If you bought it new, send it back and get it diagnosed and/or replaced.

If you bought it used, check the markings on the AC adapter. It might look like what comes with the Magni but the specs might be different. For one, the Magni has to take in AC power from the power brick, unlike most amps that have their power bricks outputting DC.

The markings say: MODEL:YP-088
INPUT:120VAC/60Hz
OUTPUT:16VAC/500mA/8.0W

 

[ProtegeManiac]

The markings say: MODEL:YP-088
INPUT:120VAC/60Hz
OUTPUT:16VAC/500mA/8.0W

That looks like the original. Now you'll need to figure out whether the adapter is what's faulty or the amp. You'll need to borrow a multimeter and check if the adapter is outputting any power. If it is, then the Magni's busted.

 

[andreartiz05]

That looks like the original. Now you'll need to figure out whether the adapter is what's faulty or the amp. You'll need to borrow a multimeter and check if the adapter is outputting any power. If it is, then the Magni's busted.

I dont h ave a multimeter but the guy i bought it from on ebay is offering me a refund. it might have been handled too roughly by the post office/mailman? dont think he would sell me a broken amp & offer me my money back

 

[ProtegeManiac]

I dont h ave a multimeter but the guy i bought it from on ebay is offering me a refund. it might have been handled too roughly by the post office/mailman? dont think he would sell me a broken amp & offer me my money back

Possible that it was dropped and something came loose. Not enough to audibly rattle but the connection to the board could have still been severed.