ASHDOWN MIBASS 220 POWER SECTION PROBLEM

[rocker19]

Hi friends

I have a problem with my ASHDOWN MIBASS 220.I use it along with two Orange Crush 35B boxes, they are combos as you know...the lower is without amp which I sold the upper one is regular combo./See my profiIe pic/. I have soldered speaker cables directly to speakers, so this is very versatile stack because I can use the upper unit both ways.As a combo and as a box.Of course, the main plug MUST BE DISCONNECTED and the combo switched off BEFORE I connect speaker cable to amp.
And this is where my problem started.

A week ago I played through combo and being interrupted by phone call I completely forgot that the plug is STILL connected to mains and later, intending to use Ashdown I TURNED IT ON.And disaster was here.I could smell some electricity fire and no sound from the speakers./Of course... /.

Now the amp behaves this:

The entire preamp works perfectly including mp3 input and mp3 volume, including all inputs and outputs and master volume works perfectly too.So the MiBass can be used as preamp or practicing unit with headphones, but power amp isn`t working.And strange thing is , when the amp is turned on I can hear usual POP from the speakers and turning the gain and volume full on I can even hear very very silent bass tone from my bass.

So...if you have ANY suggestions where the problem could be I would appreciate it MUCH.Iam not going to repair it by myself Iam not able to, but your advice could be very helpful to some repairman to whom I am intended to bring the amp.

And if someone could provide schematics diagram /I`ve been searching the internet for a few days not able to find any/ it could be great.

Thanks in advance for any advice/help.

Edited January 20, 2017 by rocker19

[Huge Hands]

Ashdown have pretty good tech service, and IIRC they are often active on here too.

Might be worth checking with them into what they can do before you open the lid and potentially void any service warranties?

[rocker19]

Thanks for reply, but I live in Slovakia and there is no Ashdown official service, that is why I need some advice on this forum.I will have to contact some local repairman.Maybe I will contact Ashdown Engineering too but postage to UK and price for repairing could be pretty expensive...
And the amp is 2011 made I bought it used /almost new but used/ so there is no warranty.

Edited January 20, 2017 by rocker19

[BassBunny]

Not sure I totally understand how you have everything set up, but if you ended up with 2 Amps connected to 1 speaker, (or speakers), then you have most likely blown the output stage of the MiBass. I'm surprised it didn't blow both of them.
The MiBass is a Class D amp but not sure what modules it uses and they aren't rep[airable. Replacement is the only solution. Most amp manufacturers use the same Class D modules so you may be able to source a replacement locally however I suspect it may be more than the amp is worth.

[MoonBassAlpha]

I wonder if these class-d amps have some kind of fuse internally on the speaker output, but the phrase "I could smell some electricity fire..." would suggest that it's more than a fuse blown, unfortunately.