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amplifier power issues

  1. R

    Sansui G-8700DB stuck in protection / relays not engaging — looking for help with F-3072/F-3073 power/protection circuit

    First off let me apologize if this isn't the right place for this but I’m working on a Sansui G-8700DB that has turned into a fairly deep protection/power-supply troubleshooting job. I’m hoping someone familiar with this model, or with Sansui’s HA12002 protection circuit, may recognize what I’m...
    • Remish
    • Thread
    • amplifier power issues relay issues sansui sansui g-8700db
    • Replies: 4
    • Forum: Exclusively Sansui
  2. Kochumvk

    Sony TA-F570ES does not turn on!

    Hello, I have a Sony 570ES integrated amp bought on Ebay. Amp reached in a bad shape. Problem: When I turn on the power button, it remain orange for some 10 seconds then momentarily turns green (1/4 second) and returns to orange. What might be the cause? Note: When the amp reached me, the heat...
    • Kochumvk
    • Thread
    • amplifier power issues sony ta-f570es
    • Replies: 5
    • Forum: Solid State
  3. J

    Denon receiver powers off and on randomly

    I have a Denon DRA-325R receiver (from the late 80s or early 90s) which I have used off and on for many years, and which is currently hooked up to our Blu-ray player for better sound during movies and shows. It still works fine, except that it will sometimes "reset" itself, powering off and then...
    • jlhopes
    • Thread
    • amplifier amplifier power issues amplifier repair denon power amp repair power amplifier receiver
    • Replies: 5
    • Forum: DIY
  4. B

    yamaha m-60 amplifier stopped powering up after cover removed, is there a reset switch?!?

    I had this happen with a marantz model 18 that when I removed the cover, it switched the unit off and had to be manually reset. I removed the cover to take a look at the condition of the inside of this m-60, wiped off a little dust and replaced the cover. thats it. now the amp won't power up at...
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