MC2105: left meter off, speakers working

[prrar]

Hey guys,

First problem here After I've put the wooden cover on the MC2105, the left meter went off, even though all speakers and gain controls work fine.

Should I try to open it and check if there's a loose connection somewhere?

 

[SaturationPt]

Have you cycled the meter switch to see if it comes to life? All settings no meter?

You might want to read through this: https://audiokarma.org/forums/index...finally-after-7-months-of-shenanigans.880354/

 

[prrar]

Yes, I’ve tried all the switches, nothing there.

Thanks for the reference! Seems interesting! But I think I'm going to ship to the store that sold me so they can repair it...

 

[damacman]

These amplifiers also have an adjustment pot for meter calibration on the meter driver board. None of the pots are sealed so oxidation is common.

 

[clinic-audio]

Yes : check this first
Don 't take any risk , this is an heavy unit
Bad contacts in meter switch and in adjustment pot from meters board

 

[prrar]

Alright, thanks guys! It's indeed a heavy unit and, taking into consideration the big frontal glass, I'd rather not take chances! I'll let it go to the surgery room

 

[clinic-audio]

you can do it yourself without moving your amp from Home !
let me know what you 've decided

 

[prrar]

you can do it yourself without moving your amp from Home !
let me know what you 've decided

Thanks for your help, @clinic-audio! I'm going to give it a shot!!

 

[prrar]

you can do it yourself without moving your amp from Home !
let me know what you 've decided

@clinic-audio you got it!!! I did exactly what you told me over the phone and it works perfectly!!! Thank you very much! I wasn’t expecting you to give help over the phone, really.

 

[edwinh]

Hm, I have one like that, too! At least the meters both light up so they look cool from across the room. It's my backup 2105, so I don't sweat it.

 

[prrar]

Hm, I have one like that, too! At least the meters both light up so they look cool from across the room. It's my backup 2105, so I don't sweat it.

Give it a try! It was really easy, thanks to @clinic-audio !

 

[damacman]

patrice is a prince among princes!

 

[TSmith8605]

Give it a try! It was really easy, thanks to @clinic-audio !

Did the fix involve cleaning switches and connections which I do periodically on my MC2505?

 

[prrar]

Did the fix involve cleaning switches and connections which I do periodically on my MC2505?

Yes, specially the potentiometers on the meter board!

 

[TSmith8605]

Yes, specially the potentiometers on the meter board!

Thanks, will file that away for future reference.

 

[Hannes123]

bit of old an old thread here but i have the same exact problem. Can someone like @clinic-audio or @prrar help me ?
thank you

 

[prrar]

bit of old an old thread here but i have the same exact problem. Can someone like @clinic-audio or @prrar help me ?
thank you

Hey! @clinic-audio helped me over the phone when I had this problem and it was really easy to fix it! I had clean the pots on the meter board, but I don't know anything more than that (I don't have the amp anymore). Clinic-audio was *really* helpful!

 

[Hannes123]

Hey! @clinic-audio helped me over the phone when I had this problem and it was really easy to fix it! I had clean the pots on the meter board, but I don't know anything more than that (I don't have the amp anymore). Clinic-audio was *really* helpful!

ah thank you! So that means, you had to remove the faceplate and open the amp. oK

 

[Searing75]

Pretty sure you can just take off the front top/side cover to get to the potentiometers. The front glass can stay put. Not sure though, as it’s been a while since I was in there.

 

[Johnny_Law]

Yes, you can access the potentiometers from the top with the top/side cover off and the front face / glass in place. They are sitting right there.