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4300

  1. ocdecio

    Marantz 4300 P700 small signal transistors

    Just leaving this info here for reference. I have a very original 4300 on the bench and as I am going through the left P700 power amp I am seeing a couple of discrepancies with the SM that may be helpful in subbing some small signal transistors. H717 to H720 - SM 2SC945 Board: 2SC735 - sub...
  2. plndrm

    Fixed! 4300 Repair/Restore

    Hi Everyone, Sorry for the length of the post… I am looking to repair my fathers 4300 that is now in my possession, I broke it – I bought it. He ordered it on 5-Oct-1975 from a dealer in South (New) Jersey for $825. The following items were included; “Handbook of Instructions” (seriously who...
    • plndrm
    • Thread
    • 4300 capacitor film marantz quad receiever vintage
    • Replies: 36
    • Forum: Marantz Audio
  3. Richs_Trains

    Marantz 4300 right channel phono problems

    Hey all, I have a 4300 that I had not used in a while. I bought a repo WC43 cabinet and decided to mount it and connect it up. While going through the testing of all the functions, I found the right channel of the phono section sounds about 50% and has a static sound (like a bad transistor)...
  4. M

    Marantz black faceplates

    I just acquired a Marantz 4300 and I've seen them with the black faceplates. I know I've seen postings here over the years for these replacements but now that I'm actually looking for one. I can't find any. Tried Ebay, Pinterest. and a bunch of sites. Nothing. Anyone know if anyone's stil making...
  5. goldswimmerb

    Add flyback Diodes to Marantz 4300/4400

    Hey, I would like to add flyback diodes to my Marantz 4300s amp boards, there's a few pics around showing the 4400 having them, but I'm not able to discern how they're wired up. Anyone either know how they are, or would be willing to post pictures of the 4400s flyback diodes? For reference...
  6. goldswimmerb

    Marantz 4300 no rear channels

    Hey guys, so I recently got a Marantz 4300 to fix up. I havent worked on a quad unit before so any advice is appreciated. As you can see the front is very very clean, but the tuning needle is broken off as well. From the outside, you wouldn't think much was wrong but the inside is telling me a...
  7. Med-Fi

    Marantz 4300 puff of smoke

    I've been recapping my marantz reciever one board at a time and powering on between each change I make. Yesterday I recapped the power supply, and replaced both switching relays. everything powered up perfectly. Today I replaced both main filter caps. Powered it on and I heard a sizzle, pop...
    • Med-Fi
    • Thread
    • 4300 capacitor caps filter marantz marantz 4300
    • Replies: 38
    • Forum: Marantz Audio
  8. Richs_Trains

    4300 no pre out on left rear

    Hey guys, Well the 4300 I have been trying to bring back has but another issue. I am still waiting on the right channel P700 and the relay still takes 35 seconds before it kicks in, but the new discovery ... no pre amp out on the left channel rear. I have used every combination of connections...
  9. Richs_Trains

    Marantz 4300 Filter Cap Question

    Hey guys, Trying to re-cap my newly aqquired 4300, the existing filter caps are 20000uf 50v and the closest I could find that would fit was a 22000uf 50v. Is it okay to increase the filter cap to 22000? Just want to make sure before I change them out. As always ... Thanks Rich
  10. Richs_Trains

    Marantz 4300... no right channel, literally

    Hey Guys, Picked up a Marantz 4300 and the volume control did not work and it only had the left channel. Found the 'local/remote' switch in remote, so that brought the volume, but upon closer inspection, the right channel plug in amp board is missing. Is there any souce for one of these, or...
  11. Pioneer SG-750, CT-F7070 and PD-4300

    Pioneer SG-750, CT-F7070 and PD-4300

    Pioneer SG-750, CT-F7070 and PD-4300
    • SX550
    • Media item
    • 4300 7070 750 ctf pd pioneer sg
    • Comments: 0
    • Category: Member's Component
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