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  1. hotrodjohn71

    Please help identify this variable resistor

    Hi dorke, Thank you for clairifying the terminology. Yes I do have a DMM, silly me :) Question, when testing the resistance on the SCR's will it matter that they are connected to the circuit board? in other words, since they are soldered to the board, could the other circuitry in the board...
  2. hotrodjohn71

    Please help identify this variable resistor

    Hi 73's de Edd, Thank you for your reply and your time and advice. I agree about the replacment pot needing the insulated plastic shaft. That style is what I ordered on the good advice of Minder (earlier in the thread) . although I smoked the new one, atleast I have a model # and the search for...
  3. hotrodjohn71

    Please help identify this variable resistor

    Hi dorke, Thank you for your reply. I agree that the circuit board is quite rudamentary, although carefully studying it and doing some resistance tests (with my minimal electronic skills) I dont believe there to be any splash-over solder shorts. I will try to recreate a circut diagram. Since...
  4. hotrodjohn71

    Please help identify this variable resistor

    Hi 73's de Edd, Thank you and thank you for your response. I guess I obces on projects some time. All of the components are factory stock from MW as far as I can see. The Light Organ unit is attached behind the unit in what looks like a factory cut-out hole. The one good channel does actually...
  5. hotrodjohn71

    Please help identify this variable resistor

    Hi 73's de Edd, Thank you for your reply. Wow, youre right, that R2 resistor does look fried. The one in the photo below circled in blue is the R1 resistor and it seems normal. Its on the functioning light string circuit. The serial # of the unit is 010879-D-45475 The model # is GMJ-2920
  6. hotrodjohn71

    Please help identify this variable resistor

    If you guys read all of that, I commend you :) Ive been closely inspecting this circut board and it looks like the main thing in the circut that could be bad is a silicone controlled rectifier. I have searched and searched and cannot find a cross reference. It is a Motorola item `SCR1590` and...
  7. hotrodjohn71

    Please help identify this variable resistor

    Thank you all for the help in sourcing a potentiometer. I got one installed. I plugged everything in and the new potentiometer sparked and got smoked. So now i know the problem isnt the potentiometer but just a symptom of something bigger. Please give an opinion: This unit I'm working on here is...
  8. hotrodjohn71

    Please help identify this variable resistor

    Thank you. Is there a term for the orientation of the pins and ears? I just noticed that that unit at Digikey has the pins and ears going the opposite direction.
  9. hotrodjohn71

    Please help identify this variable resistor

    https://www.digikey.com/product-detail/en/tt-electronics-bi/P120PK-Y25BR10K/987-1710-ND/5957454 Kellys_eye, Thank you for your reply. I have made note of that unit you shared the link too. I was also looking through the pages on the place that Minder shared, and just ancillarily looking at the...
  10. hotrodjohn71

    Please help identify this variable resistor

    Hi dorke, you are exactly precisely correct! The unit iI'm working on is the top one in the photo. It has been my wife's from childhood. Recently we were in an antique store and she saw that Chipmunks Christmas record. I secretly got it and thought I'd give it to her for Christmas and secretly...
  11. hotrodjohn71

    Please help identify this variable resistor

    Thank you guys for giving me alot to go by. Would there be a noticable difference between the logarithmic version and the linear? Great info! I really appreciate it! Didgikey has about 700 different units to choose from. Which wattage do you think might be sufficient as there are many different...
  12. hotrodjohn71

    Please help identify this variable resistor

    Hi Heavens1944, thank you for your reply. The potentiometer didnt actually come from the record player part of the unit, but this MontgomeryWard recordplayer has a seperate unit within the console that takes sound pulses from the speaker wires and runs it through a device that causes these...
  13. hotrodjohn71

    Please help identify this variable resistor

    Hi guys, thanks for permission to this forum. If my question is asked in the wrong section, please advise and I will correct. I am trying to find a match to a potentiometer I removed from an old Montogomery Wards Record player. I think from my research it is called a linear PC mount style as it...
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