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overheating

  1. Gerge_Sletar

    Pioneer A-X5 overheating after replacing transistor

    Hello I’m in need of some advice, I've been working on a pioneer A-X5 that is overheating after replacing a transistor in the left channel. After much probing with a multimeter, the right channel output transistors and other components showed the correct voltage. Moving over to the left...
  2. B

    Marantz 2230 Output Transistors overheating

    Hello, recently I finished a full recap of both the left and right p750 amp boards on my marantz 2230 as well as replaced the three small transistors on each board (not the snowflake heatsinked ones or output transistors.) This was about three days ago and I have used it a fair amount since with...
  3. Assil

    Sansui AU-555A Post Restoration bias problem

    Hello everyone I am currently restoring an AU-555A and facing an issue with the left channel of F1266 power board. In brief I have replaced all electrolytic caps, all transistors except the C1030, still good. I have individually checked all resistors, pots and conductivity of all copper traces...
  4. M

    SX-1250 died

    Hello, total Noob here. I inherited an SX-1250, decent condition, a few months ago. It worked ok. A few weeks ago, I took it apart and cleaned all the switches and contacts and it worked beautifully after that. Yesterday, the receiver was idle for several minutes after listening to some music...
  5. VonKuhn

    Kenwood KR-7600 transistor problems

    Hello, after weeks of searching I am finally desperate enough to post a question and look for help. Recently I got a Kenwood kr-7600 in great condition to repair, just a bit dusty, and no sound at all. After some searching, I found a transistor (2SC1419 NPN) surrounded by dark spots on the board...
  6. David Weaver

    Luxman L-480 Overheating Help

    I have this beautiful Luxman rig that I acquired from my brother but the amp (L-480) has an issue that is apparently common to these models. I did find the following that best describes the problem from Geoffrey Kolbe (May 6, 2008) on an other forum: "There seems to be a problem with a...
  7. buckeye56

    "Vintage" receiver

    Hi. My old Technics SA 205 receiver is super hot underneath on the left side (me facing the front of the unit). It's like this if I listen to the radio, play CD, etc.The right side is cold. Only two bookshelf Polk speakers are connected, a turntable, and a DVD player, but obvs I only use one...
  8. ndstudio

    Yamaha CR-620 Overheating...

    Hey all, Setup: Yamaha CR-620 Yamaha YP-211 2x Legend Audio Speakers - 8ohm 100w Max Yamaha YST-SW45 (Active Powered) My Yamaha CR-620 Receiver started to overheat and I cant seem to figure out why... I first noticed a smell coming from my A/V setup about 4 months ago but it soon went away...
    • ndstudio
    • Thread
    • cr-620 overheating yamaha
    • Replies: 7
    • Forum: Yamaha
  9. T

    Any 16 ohm speakers out there?

    Someone help 'unconfuse me' I've been seeing all of these threads from audio-buffs telling me NOT to use two sets of 8 ohm speakers (one set on the "A", the other on the "B" = A+B on at the same time), because it reduces the input impedance to 4 ohms, and will cause your receiver to overheat...
  10. nooboy

    Tube amp worsens after 6 hours or so

    Hello. So here's the thing: I have an antique audio (ASL) combo driving Dynamo a-25 speakers. 2x25 watts. Kt-88 shuguang tubes, and buggle boys. Anyway... I love the set up, really, but after about 7-8 hours at 12 o'clock volume, it starts sounding like shite. Muddy, like every record I put on...
    • nooboy
    • Thread
    • overheating sound decay static
    • Replies: 17
    • Forum: Tube Audio
  11. M

    A couple of questions about optimizing my analog/digital stereo setup.

    First my setup is as follows. Yamaha HTR-5990 A/V reciever - used solely as a preamp Crown Com-tech 410 power amp Technics SL-1500 turntable with Shure m91 cartridge HP desktop for all digital media using the Digital Coaxial output on the motherboard Acoustic Research AR90 speakers Now there...
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