M90 speaker issue

[mark]

Hi guys
I’m in deep, the left speaker has no sound but I’m getting full sound with the headphones. Where should I be looking?

 

[Superduper]

Most likely, the headphone jack or external speaker jacks are dirty or have continuity issues.

 

[jays]

Hi guys
I’m in deep, the left speaker has no sound but I’m getting full sound with the headphones. Where should I be looking? View attachment 61166

did you find your issue im kind of having the same problem! but even with the headphone jack fully cleaned, the external jack also clean nothing. I went through all the switch 10 times now. was curious to know if you were able to find a solution

 

[floyd]

It's very rare for the m90 speakers to fail but I would check the speakers first before anything just to be sure.

 

[jays]

It's very rare for the m90 speakers to fail but I would check the speakers first before anything just to be sure.

on my side speaker have already been tested but the sound from the headphone jack is really dim I have deoxit it probably 10 time I might disassemble the jack just to check but I doubt at this point it could be this. I could maybe jumped the wire from this point just to test it. I don't know. first time I have a problem like that.

 

[floyd]

Are the vu meters working right? The only reason I ask is because is if one meter is not working right it would be a sign there was a problem in the pre amp section keeping in mind on FM one meter is for signal strength and the other acts as a level meter. On cassette both meters pretty much swing the at the same time showing both channels working.

 

[jays]

Are the vu meters working right? The only reason I ask is because is if one meter is not working right it would be a sign there was a problem in the pre amp section keeping in mind on FM one meter is for signal strength and the other acts as a level meter. On cassette both meters pretty much swing the at the same time showing both channels working.

I didnt think of that, but yes both metter are working. il be pulling the headphone jack appart tomorrow but I really doubt I will find something there.