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protection mode

  1. T

    Any knows how a screw can cause protect mode (on Onkyo TX-SR605)?

    A friend gave me an Onkyo TX-SR605 which got into protection mode right after being powered on. I was able to isolate it to a screw which secures the vertical PCB board to the horizontal amp board -- if I loosen the screw or take it out, the receiver works normally; if I tighten it all the way...
  2. K

    Sansui AU217 in protection after touching chassis

    Hi, I have finished fixing broken Sansui au 217 and also recapped it after fix it. Now it does work almost ok. The trouble is that it goes to protection when I am touching with hand metal parts/frame. Initially I thought that I am crazy with random protection mode. Do you recall any thread that...
  3. dudeface

    Pioneer SX-880 Recently Moved, Now Relay Click Is Intermittent

    Hi. Sorry for another Pioneer protection-mode thread. I feel like this one could be fairly easily solved. It always worked fine up until I moved into a new house last week. It was packed well and went in a moving truck. It worked the day I set it up in the new house. Today, there was no relay...
  4. D

    Denon POA 6600 Problem

    I have a Denon POA-6600 on my bench that is stuck in protection mode. I have replaced som components that was short. Relays klick in and everything seems fine but red light flashing. When I try to set idle current (VR501 is replaced) nothing happens but after some time turning on it TR514 starts...
    • djkcb
    • Thread
    • denon 6600 problem protection mode
    • Replies: 2
    • Forum: Solid State
  5. J

    Nakamichi TA-4A in protection mode and problem with voltage in the 18v rail

    My Nakamachi TA-4A: the problem was that the left channel had less sound that the righ one, so i check it and what i found is that the difference in audio was originating in two parts: one: in the out of the volume pcb, with the osciloscope i check it and there was a little difference in the...
    • jerryf1
    • Thread
    • amplifier nakamichi protection mode ta-4 ta-4a
    • Replies: 1
    • Forum: Solid State
  6. B

    Philips 7871 receiver problem

    Hi , I have a philips 7871 reciever that is wonderful. However, it started making loud buzzing noises and crash sounds. This happened regardless of the source. It also flashed the protection mode. I shut it down. I hqave a local tech in Maine, Kent Palmer, but he cannot find any schematics or...
    • Bryder
    • Thread
    • 7871 philips protection mode schematic
    • Replies: 1
    • Forum: Solid State
  7. arhargi

    CR-2020 in protection mode and Triac reversal.

    Last weekend I was running the old gal pretty hard at probably 75% plus for about 3 hours, off-and-on. Had my little twin cooling fan unit running too. It was running fine when I shut it off and went to bed (passed-out). During the course of this last week, I thought I noticed that the meter...
    • arhargi
    • Thread
    • protection mode
    • Replies: 0
    • Forum: Yamaha
  8. Ben Rothman

    Pioneer SX-1010 Weird Intermittent Protection Issue

    Hi, I have been chasing an issue on my Pioneer SX-1010 for about a year. I have posted about it a couple of times; now and then, it will randomly jump into protect mode for 2 seconds and jump out. I have observed this issue for a year and can confidently say there is no pattern. It might not...
    • Ben Rothman
    • Thread
    • intermittent intermittent problem pioneer pioneer sx-1010 pioneer sx-1010 receiver protection mode protection problem sx-1010 sx-1010 issue
    • Replies: 11
    • Forum: Solid State
  9. 6

    LUXMAN R-1070 (3 fuses blown and faint sound if relay clicks)

    New-to-Me R-1070. This single owner unit is stuck in Protection Blinking mode with the top 3 fuses burnt. Now I tried replacing all 3 but it still happened, but randomly the Relay would Click and there would be sound; Furthermore the R-CH was faint, and when the volume went too high it went...
    • 68BStang
    • Thread
    • blown fuses luxman protection mode r-1070 receiver
    • Replies: 6
    • Forum: Solid State
  10. J

    Pioneer sa7100 pioneer output help

    Hi. I'm a new member. Sorry for a redundant post, but I've tried to read the the forums and I'm not quite understanding how to proceed and what my options are in going forward. I powered on amp for about 3minutes. Just acquired it. Played fine but then started to click into protection mode. It...
    • JohnKuz1
    • Thread
    • amp output power pioneer protection mode sa7100
    • Replies: 5
    • Forum: Pioneer Audio
  11. Ren_

    Victor M-L10 won’t go out of protection

    Recently I bought a victor M-L10 and it was working at the seller’s place. Brought it back and the amp is working fine and I went ahead and checked dc offset and bias. Something was off when I turned it on to tune the bias and dc offset. The meter stayed Red, but I didn’t bother. When I put...
  12. alexprollock

    SX-750 Stuck in protection, smoking resistor.

    Howdy everyone. As mentioned, I've managed to get my 750 stuck in protection mode. Full disclosure, I am a rookie that now has huge respect for what you guys do. I recapped the AWR-099 board to get rid of the hum in both channels...it worked, no issues there. But I had the transistors as well...
  13. G-901

    Sansui G-9000 in protection dc offset

    The receiver is in protection, speaker relays do not click on. Was testing DC offset at terminal 27 and 28 and am getting -2.5vdc tried to adjust it on driver boards but would only get down to -2.2 Vdc I’m at a loss as to what it could be. Any help would be much appreciated
    • G-901
    • Thread
    • bias dc offest g-9000 g-901 protection mode protection problem
    • Replies: 6
    • Forum: Exclusively Sansui
  14. V

    Marantz PM6006 goes into protection mode, electronic help?

    Hi guys, this is my first post here and I hope you guys can help me. I have a Marantz PM6006 that I've only been using for about two years. A while back it suddenly went into protection mode while playing and ever since it's gotten worse and worse until now: it just turns off right after the...
    • vvvvv
    • Thread
    • amp electronics help marantz protection mode
    • Replies: 0
    • Forum: Solid State
  15. toler8

    Realistic STA-2080 in protect mode

    I'm an interested & enthusiastic novice when it comes to electronics but my knowledge is basic to say the least, hence why iv'e posted here in the hope you guys will help me through this issue and hopefully i'll learn along the way. Iv'e been restoring this receiver, so far all switches and...
    • toler8
    • Thread
    • protection mode realistic 2080
    • Replies: 2
    • Forum: Solid State
  16. G

    Yamaha HTR-5940 Shuts off in Protection mode

    When I start my Yamaha HTR-5940 AVR and begin playing music it automatically shuts off in “protection mode” as soon as I begin playing music. I took it apart and gave it a once over, but upon viewing the components I don’t see any burnt resistors or anything of that sort. The first issue I...
  17. The_I.M.P.P

    Pioneer vsx-d307 no sound and protection issues, any help?

    Good day guys i have a pioneer vsx-d307 receiver that comes on but doesn't play any sound, i do see a few obvious signs of problems like the power mosfet has scorching around them and theres a resistor (R459)that burnt completely off the board so i dnt know the value of it, i have downloaded the...
    • The_I.M.P.P
    • Thread
    • no sound pioneer vsx d307 pioneer vsx-d307 protection protection mode vsx d307 vsx-d307
    • Replies: 9
    • Forum: Pioneer Audio
  18. alexhastings

    PA3004 chip PCB substitute

    After discovering a failed PA3004 chip on my SA-7700 rebuild, and paying $35 for a single replacement, I asked @merlynski to help me design a PCB substitute, so we can all keep rehabbing these old units without paying exorbitant prices for new "old stock" chips. Our design goal was to replicate...
    • alexhastings
    • Thread
    • pa3004 pioneer protection protection board protection circuit protection ic protection mode protection problem protection relay relay click
    • Replies: 66
    • Forum: Pioneer Audio
  19. R

    Denon 2105 in Protection mode. Wanna help a rookie?

    Hi. Just seeing if anyone is interested in helping a rookie learn a bit. I have a Denon AVR 2105. Given to me so I have nothing invested in it, just want to use it to learn. Guys son was cranking some tunes one night and it shut off. It goes into protection mode seconds after turning on. 1. I...
  20. C

    SPEC2 stays in protection after restoration

    Hello, I decided to restore my Spec2 after reading some threads about it from users @mattsd and @markthefixer. I replaced all transistors and film capacitors in the power amp boards, power supply board and amp meter board with the exception of the output transistors. I also replaced 2 relays...
  21. YapLiMin

    Sansui 5050 goes into protection mode when volume turned up

    Hello AK'ers. Been getting a lot of good information from the forum and appreciate the wealth of knowledge being shared here. Working on restoring a Sansui 5050 with a F-2701 Power Supply Board. Without getting into too much detail at this time, I'd like to describe the big picture problem I'm...
  22. Conspheracy

    Infamous Kenwood KR-9600 in Protection mode.

    hey everyone, i'm new to audiokarma This particular receiver was my father's and he gave it to me as a house warming gift. It sat for a few years before I finally set it up with the original speakers in my home a few weeks ago. Upon the initial setup the relays did not want to close but after a...
  23. RunOutGroove

    Speaker switching box and "protection mode" ...?

    OK... I've upgraded my stereo so that I'm running a two sets of 6 ohm speakers from my trusty old Marantz 2270 recover rather that a couple of pairs of 8 ohm speakers that I was running in the past. In the interest of not damaging my Marantz receiver, I took folks' advice here and haven't been...
    • RunOutGroove
    • Thread
    • marantz 2270 protection mode speaker switcher
    • Replies: 54
    • Forum: Speakers
  24. Rebel

    Yamaha HTR 5650 - Power on Immediate Power Off

    I inherited a Yamaha HTR 5650, looks pretty good. Powers on (relay clicks and lcd screen turns on) then Immediately powers off. Unit does not flash a message when it powers off, just blanks out. I went through a reset procedure I found, I tried it twice it does the exact same thing afterwards...
    • Rebel
    • Thread
    • protection mode repair yamaha
    • Replies: 53
    • Forum: Yamaha
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