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project/one

  1. RJB-Stereo

    Project/One Mark III - Issue with speakers not wanting to come in at power up.

    Hello, I’m having an issue with my receiver. The same thing happens whether I’m using Speaker set A or B. Note: This unit is virtually identical to the Pioneer SX750 and I have been using the 750 service manual to repair the unit with great success. - Volume set to 0. - Power receiver...
    • RJB-Stereo
    • Thread
    • no speaker sound project/one speaker volume issue
    • Replies: 8
    • Forum: Solid State
  2. RJB-Stereo

    Project/One Mark IIV B Dial Cord Question

    Hello, I am refurbishing a Project/One Mark IIV B receiver and have a couple questions. Among many other small issues, there was no dial cord on the unit when I purchased it. I sourced and purchased one from a guy who was parting the exact unit out. I was able figure out the routing but...
    • RJB-Stereo
    • Thread
    • dial cord project/one
    • Replies: 2
    • Forum: DIY
  3. G

    Project/One Mark IVB - Deviton 4080 FM mute and stereo problem

    Hi guys, I've encountered an odd problem with this Deviton 4080 receiver I've pickup up. First of all, it's an obscure German rebranding of an already obscure Project/One mark IVB receiver. (It says Mark IVB on the transformer and meters.) So I haven't been able to find any schematics or...
    • Gertjan90
    • Thread
    • deviton fm muting fm stereo ha1137w mark ivb project/one
    • Replies: 0
    • Forum: Solid State
  4. U

    Project/One Mark IV protection

    I've come across a strange one. When the unit came in for repairs, one channel had shorted outputs. I replaced the outputs and found a weak coupling capacitor and the unit fired up. I had it on a Dim Bulb Tester, thankfully, since 30 secs after firing up, it thumped, the bulb lit up and the...
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