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The Red Plastic potentiometer on 5200


Tonyscouter

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That red plastic item visible through the hole in the RF shield is not a potentiometer. It’s an RF coil that adjusts the audio carrier part of the RF signal. It’s very fragile, doesn’t adjust very much and it you do adjust it, use a plastic or ceramic screwdriver because anything conductive will affect the signal. 
 

There are two other actual potentiometers on the board outside the RF shield - the larger one is the color pot, the smaller is the POKEY adjust resistor, which affects calibration of the analog control circuit. 

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On 1/30/2020 at 9:35 AM, DrVenkman said:

That red plastic item visible through the hole in the RF shield is not a potentiometer. It’s an RF coil that adjusts the audio carrier part of the RF signal. It’s very fragile, doesn’t adjust very much and it you do adjust it, use a plastic or ceramic screwdriver because anything conductive will affect the signal. 
 

There are two other actual potentiometers on the board outside the RF shield - the larger one is the color pot, the smaller is the POKEY adjust resistor, which affects calibration of the analog control circuit. 

Thank you for the information.  I did a video mod to get composite out so I have no need to adjust the red coil.

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