Turner JM+2/U (M+2) Schematic Needed or Internal Photo

[SuperLid]

I am unable to locate the schematic, or internal photo, of the M+2/U that uses ONE DARLINGTON transistor. I found the schematic of the version that uses two discrete devices. That is NOT what I am in need of. The unit I have, uses a single 2N5306 device, for amplification.

Thanks,

SL

 

[Smokinone]

got these

 

[SuperLid]

got these

That's not it. Thanks.

 

[Lkaskel]

That's not it. Thanks.

 

[SuperLid]

If it was that easy, I would not have posted here. It seems like I may have the only one of these on the planet.

I need the schematic or internal photo of.. JM+2/U or M+2/U single transistor. NOT +2

SL

 

[Lkaskel]

SL,
I worked on a single transistor M+2U and that was the schematic I used as I did not have one for it either and it worked well enough to get me there. A pic of the mic is attached but I did not take it for the parts detail. It was to show the owner that the element was in good shape overall as someone had taken it apart previously. The area of the board nearest the mic cord has the same parts as the B25396 "Circuit Board Assembly" in the schematic and the lower part where you can see the 4.7 cap is the same as the POT "potentiometer” part of the schematic. Sorry it’s not exactly as you wanted, just trying to help here. Maybe you could let me know what detail you needed and I may be able to help you further.

 

[SuperLid]

SL,
I worked on a single transistor M+2U and that was the schematic I used as I did not have one for it either and it worked well enough to get me there. A pic of the mic is attached but I did not take it for the parts detail. It was to show the owner that the element was in good shape overall as someone had taken it apart previously. The area of the board nearest the mic cord has the same parts as the B25396 "Circuit Board Assembly" in the schematic and the lower part where you can see the 4.7 cap is the same as the POT "potentiometer” part of the schematic. Sorry it’s not exactly as you wanted, just trying to help here. Maybe you could let me know what detail you needed and I may be able to help you further.

View attachment 75899

Larry, we are getting there. Someone was in the mic and I Need to see one. any chance you have a photo with the switch connections? The orientation of the transistor in your photo helps. Someone before me, installed a MPSA13, that has a different pinout, than the 2N5306, but they neglected to account for that.

One other thing, that is throwing me off, is that there was a label in the battery compartment area, that showed the polarity as positive on the right, like a 2 transistor version. The mic draws a lot of current if I connect the polarity as shown. Something tells me, that this is incorrect and should be reversed. Do you know if positive is on the left in this version?

Thanks,

SuperLid

 

[Lkaskel]

If your question was regarding the wiring of the switch I found this in the Turner Wiring Handbook.

 

[SuperLid]

If your question was regarding the wiring of the switch I found this in the Turner Wiring Handbook.

The wiring on this mic I have here, is nothing like the book. Please see my edited reply in the previous post.

 

[Lkaskel]

Larry, we are getting there. Someone was in the mic and I Need to see one. any chance you have a photo with the switch connections? The orientation of the transistor in your photo helps. Someone before me, installed a MPSA13, that has a different pinout, than the 2N5306, but they neglected to account for that.

One other thing, that is throwing me off, is that there was a label in the battery compartment area, that showed the polarity as positive on the right, like a 2 transistor version. The mic draws a lot of current if I connect the polarity as shown. Something tells me, that this is incorrect and should be reversed. Do you know if positive is on the left in this version?

Thanks,

SuperLid

Ok, so the other pics I took are attached. I hope they help!!! I had returned this mic so I cannot get any other pics for you.

 

[SuperLid]

Ok, so the other pics I took are attached. I hope they help!!! I had returned this mic so I cannot get any other pics for you.

The mic is working now. The factory battery label, the transistor and all of the wire colors threw me for a loop!

Thank you for the help!

SL

 

[Greg T]

Schematic

 

[SuperLid]

Schematic

Nope! ONE transistor...