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2238b

  1. C

    2238B tuner pointer variant

    While restoring my old 2238B, I was planning on changing the bulbs to LEDs. However, looking at the tuner pointer I don't see how I can change the bulb, and it is unlike any other Marantz pointer I've seen before? Do I have any options for this? Thankfully, unlike many of the other bulbs...
  2. tutor_turtle

    2283B: Known trouble-some transistors?

    I have a Marantz customer I did a complete recap on his 2238B a few years back. The customer was very pleased with the results, Now a few years have past, he's getting drop-outs on one channel. I don't have it in the shop yet, I'm having him try out all the switches to eliminate dirty contacts...
  3. A

    2238B has -32.2V on left channel after recap

    I recently got a 2238B that needed some cleaning up, and while I had it apart I figured I'd do a recap. After I finished that I saw that it was drawing about 60W, and the relay was not closing. I found that the left channel (either side of R767) is at -32.2VDC. I've been trying to isolate where...
  4. F

    Volume pot disassembly

    Anyone have any experience tearing apart a marantz 2238b or similar volume pot for a thorough cleaning? I can’t get a dead spot out of the pot by simply using deoxit through the opening. I have the pot removed from the board and the back metal cover removed on the pot. But it looks like the...
  5. ocdecio

    2238B noise on power amp (both channels)

    Here's something that is puzzling me. It is a spiky wave 20mV / about 520Hz with the amp running in idle and shorting plugs at Main In. The noise was there before replacing capacitors and diodes at the power amp and power supply. I doubt it is anything at the amp itself since both channels...
  6. RMilton

    Marantz 2238b No bass/mids on Right Channel

    I recently acquired a very clean Marantz 2238b. It was recapped a few years ago, cleaned, and the bulbs were swapped with LEDs. The work was performed at a professional shop here in the midwest (at the request of the prior owner). The left channel works perfectly. The right channel has great...
    • RMilton
    • Thread
    • 2238b marantz marantz 2238b marantz receiver
    • Replies: 3
    • Forum: Marantz Audio
  7. Y

    Marantz 2238b crackle and pop

    Hey guys. What's up? I bought a Marrantz 2238b reciver from this guy and it sounds great. The problem I have with it is that every once in a while it starts with this quiet crackle and then a few powerful pops. This happens on the left speaker and even when the volume is off. I went to get it...
  8. runningdog

    2238B FM alignment - where is L107?

    The 2238B service manual calls for adjusting trimmer C121 and oscillator coil L107. C121 is marked in the manual, it is the top one pointed to in the picture. But where is L107? Is it the coil that the second arrow is pointing to? I do not see it on the board layout in the sm. It also calls for...
  9. Drew Kepler

    Marantz 2238b Lamp kit

    I just picked up a 2238b and some of the lamps are out. At first I wanted to go LED to reduce the heat, but I want to keep the original look and color. Anyone know the best place to get the lamp kits, and how hard is it to DIY.
  10. C

    Marantz 2238B "Stereo" and "DLB-1" lamp replacement

    Hi! I'm a novice with tinkering with audio equipment, but I'm really enjoying it! I recently acquired a very nice Marantz 2238B with a wood case. Several of the fuse bulbs were burned out, but I successfully replaced them with LED bulbs. I broke one of the plastic tabs of the light assembly...
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