Help with MKV 90 combo

[ToneZone6L6]

Couldn’t get any sound. Took about 29 minutes to figure out the speaker wasn’t connected to speaker jack.
Something seems wrong now, did I fry the amp or is there something I should check
Has power but got real loud and screeched when taking it off standby
Thanks!

 

[rarebitusa]

It's possible something may have been damaged. I'd put every channel in 10W mode and turn off the loop (bypass toggle switch) start with Ch 1 gain @ 10am and slowly turn the channel master up and see what it sounds like.

 

[ToneZone6L6]

It's possible something may have been damaged. I'd put every channel in 10W mode and turn off the loop (bypass toggle switch) start with Ch 1 gain @ 10am and slowly turn the channel master up and see what it sounds like.

I changed the tubes and fuse today
The power came on briefly and now there’s nothing at all
I’m guessing I may have at least damaged the transformer

 

[Eevil]

I changed the tubes and fuse today
The power came on briefly and now there’s nothing at all
I’m guessing I may have at least damaged the transformer

No sound at all?

 

[ToneZone6L6]

No sound at all?

No power at all
When I discovered why I had no sound, the speaker wasn’t plugged in. I plugged it back in and got a screeching sound and then nothing
Changed the tubes and only got power for a few seconds and then nothing

 

[Eevil]

No power at all
When I discovered why I had no sound, the speaker wasn’t plugged in. I plugged it back in and got a screeching sound and then nothing
Changed the tubes and only got power for a few seconds and then nothing

Sounds like a trip to some proper tech..

Sometimes I’ve had the ac cord a bit detached from the connector and that’s caused a bit head scratching moments, but that’s only thing that comes to mind.

 

[tbonesullivan]

How loud did you have it turned up when you turned it on? If the master volume was at zero, I believe it wouldn't do much, but if you were trying to play loud for 29 minutes with no load, that's usually a recipe for a toasted output transformer, and possibly more.

 

[ToneZone6L6]

How loud did you have it turned up when you turned it on? If the master volume was at zero, I believe it wouldn't do much, but if you were trying to play loud for 29 minutes with no load, that's usually a recipe for a toasted output transformer, and possibly more.

Maybe quarter of the way
I located a tech with great reviews and dropped it off for diagnosis. Will post back with verdict
Thanks everyone!

 

[mace]

The way the volume dials work a quarter volume is pretty significant amount of juice.. hope it isn't a major deal to get it fixed up!