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!

 

[ToneZone6L6]

Tech said I blew an internal fuse and also he noticed the reverb wasn’t working
He replaced some type of component on one of the boards for the reverb
So fortunately, not an expensive fix

 

[Eevil]

Tech said I blew an internal fuse and also he noticed the reverb wasn’t working
He replaced some type of component on one of the boards for the reverb
So fortunately, not an expensive fix

That’s usually the best outcome