Terrible noise and blue lightning..

[ke2]

I turned on my Mesa Mk1 last night, just to check a pedal.

Nothing was plugged into the amp, except for the speaker cord.

When turning on the power switch, everything seemed normal, but when I flipped the standby, there was a helluva noise, and I saw blue light on the wall behind the amp. I`m taking it to a tech asap, but have anyone seen something like this before?

I`ve had tubes go bad, but that`s either silenced the amp right away, or gradually. I`ve had fuses blow, and that also yields no sound. This was loud as hell, and didn`t sound good at all... Combined with the lights I saw from behind the amp, I`m kinda worried. I didn`t keep it on for more than a second or two, so I don`t know 100% if the light came from the tubes or something else. There was a funny smell, but no smoke.

 

[Gainfreak]

I turned on my Mesa Mk1 last night, just to check a pedal.

Nothing was plugged into the amp, except for the speaker cord.

When turning on the power switch, everything seemed normal, but when I flipped the standby, there was a helluva noise, and I saw blue light on the wall behind the amp. I`m taking it to a tech asap, but have anyone seen something like this before?

I`ve had tubes go bad, but that`s either silenced the amp right away, or gradually. I`ve had fuses blow, and that also yields no sound. This was loud as hell, and didn`t sound good at all... Combined with the lights I saw from behind the amp, I`m kinda worried. I didn`t keep it on for more than a second or two, so I don`t know 100% if the light came from the tubes or something else. There was a funny smell, but no smoke.

You more then likely smoked a power tube and possible a screen grid resitor. No biggy!! Im sure your tech will have you up and running!!

BTW... done it many times throughout the years

 

[ke2]

I turned on my Mesa Mk1 last night, just to check a pedal.

Nothing was plugged into the amp, except for the speaker cord.

When turning on the power switch, everything seemed normal, but when I flipped the standby, there was a helluva noise, and I saw blue light on the wall behind the amp. I`m taking it to a tech asap, but have anyone seen something like this before?

I`ve had tubes go bad, but that`s either silenced the amp right away, or gradually. I`ve had fuses blow, and that also yields no sound. This was loud as hell, and didn`t sound good at all... Combined with the lights I saw from behind the amp, I`m kinda worried. I didn`t keep it on for more than a second or two, so I don`t know 100% if the light came from the tubes or something else. There was a funny smell, but no smoke.

You more then likely smoked a power tube and possible a screen grid resitor. No biggy!! Im sure your tech will have you up and running!!

BTW... done it many times throughout the years

Hope so, that`ll be a fairly easy and not too expensive fix.

 

[MrDan666]

You more then likely smoked a power tube and possible a screen grid resitor. No biggy!! Im sure your tech will have you up and running!!

BTW... done it many times throughout the years

Iv done the same thing too many times Ralph And blue lightning and sparks have appeared more than just a few times when iv been learning how to mod amps and ending up doing something wrong