AF gain pot

Discussion in 'QRP Corner' started by NM0L, Jan 21, 2020.

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  1. NM0L

    NM0L Ham Member QRZ Page

    I have a 2 band QRP transceiver ( made in China ) the AF gain pot has gone dead except one spot at about half full gain. The circuit board is surface mount. Back in my tube days I would put a few drops of 'volume control lube' in the pot to clean it up. But this pot is VERY small and I don't know if it has a carbon strip and a 'wiper' or some other way to change resistance. I don't want dissolve the carbon with the wrong lube. Any ideas ? There is a hole in the pot case where a lube could get in. It does not appear that a new pot could be put on the surface mount board.
  2. N8AFT

    N8AFT Ham Member QRZ Page

    it's already broken OM...
    I use WD-40 here btw...
  3. W7UUU

    W7UUU Super Moderator Lifetime Member 133 Administrator Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    Huh? What does that mean

  4. N8AFT

    N8AFT Ham Member QRZ Page

    ReRead his thread OM.
    WN1MB likes this.

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