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  1. J

    Marantz 1150 high bias

    I recently rebuilt an 1150 with a blown-up left amplifier module. Outputs were replaced with mj21193/4gs, bias transistor was replaced with an mje243, and the larger driver transistors were replaced with mje15032/33s. Everything seems to be working, except the bias will not go below 14 mV when...
  2. JamesWest...

    Channel output Issue Marantz 1150

    Hello dwellers of the Marantz subforum. :) I am seeking knowledge about a Marantz 1150 (not the D model). This amp is a friends, and they asked me to take a look at it. I have a rudimentary knowledge of electronics (mainly tinkering with them for fun) and can solder confidently. A bit of...
    • JamesWest...
    • Thread
    • 1150 amplifier repair marantz marantz 1150 output board repair advice repair advice help needed repair amplifier repair help
    • Replies: 9
    • Forum: Marantz Audio
  3. ocdecio

    Model 1150 - never seen anything like this.

    I am pretty sure this wasn't what the manufacturer intended. This is the power supply I wonder what other surprises wait for me.
  4. jcat8s

    Marantz 3800 Switch

    hi, im looking for the phono 1 switch or the entire selector switch bank...right in the middle of helping out with a restore, and this part is desperatly needed...thanks for your time and have a great one...it is part #S201-452-2002-000, made by Alps...i dont know if there is another switch that...
    • jcat8s
    • Thread
    • 1150 1150d 3600 3800 marantz switch
    • Replies: 2
    • Forum: Marantz Audio
  5. Richs_Trains

    Marantz 1150 / 1150d P-700 questions

    Hey all, I sold some P-700 power amps from a Marantz 1150d to someone who needed them for a Marantz 1150 as I understood the 1150, 1150d, and 2275 had the same basic power amps. His unit has 6 pins on the P-700 and the ones I sent only have 5 pins. Looking at the schematics I have for both...
  6. E

    Any one know the colors for Marantz 1150 Volume Wiring

    I've got an 1150 that had the volume and power cut out, there's a lot of butchered wires in there now, anyone who's done one remember what color wires go to where? Thanks!
    • e-van
    • Thread
    • 1150 integrated marantz potentiometer receiver wiring
    • Replies: 0
    • Forum: Solid State
  7. Richs_Trains

    Marantz dual cap question

    Hey all, Just a quick question about dual caps. Several Marantz units use dual caps and many on this forum replace them with two single caps. My question is how do you figure the values necessary for the 2 single caps based on the value on the dual cap. Thank you in advance. Rich
  8. Richs_Trains

    Marantz 1150 finally fixed

    Hey all, Got some help on my 1150 but I posted in barter town and that was the wrong place. I am going to order the suggested transistors for the differential pairs, but figured I may as well replace the other transistors on the power amps while I am at it (the static problem sure sounds like...
  9. P

    Can Anyone Help me wire up db Meter lamp on 1150D amp?

    Hi All I inherited an 1150 D integrated amplifier circ 1976 from my late father who more or less took good care of it til he accidentally got it waterlogged in the basement flood back in 79' but that's another story entirely. Luckily enough, he let it dry out & got it professionally tended...
    • prophetk
    • Thread
    • 1150 1150d amplifier bi-pin lamps bulb replacement lamp light bulb marantz meter indicator power indicator lamp
    • Replies: 2
    • Forum: Marantz Audio
  10. P

    Marantz 1150D meter indicator Lamp reaching Out

    The meter indicator Bulb lamp (blue) went out recently which indicates db levels (?) [ vertical rectangular meter] Anyone know what the part # is & where I can purchase one? I do have the service manual on hand but doesn't indicate it. Thanks so Much in advanced!
  11. Richs_Trains

    Marantz 1150 - Need Help - Intermittent Fail - Heavy Static

    Hey AK, I bought a basket case 1150 about 2 years ago and managed to find the pieces that were missing and replaced the broken shaft. I was able to get it going and adjust the amps and then I started using it as my “outdoor” system. It played fine for a week or two and all of a sudden, heavy...
  12. Richs_Trains

    Marantz 1150 Help!

    Hey all, Been awhile since I played around, been tough since Kim passed. Found an 1150 that the seller said was packed poorly and dropped in shipping. It had the usual bent faceplate and a busted shaft. The seller had purchase the new board with the "stereo" shaft attached and included it...
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