Sounds like DC leakage....pre-drive and/or output transistors (or IC) becoming intermittent often pass DC voltages to the speakers. The "pops" you hear are these DC pulses being passed to the speakers and the "cutout" is the protection circuitry doing its job...protecting the speakers. Speakers want AC voltages...plus voltages moving the cone in one direction, and a negative voltage moving it in the opposite direction. DC voltages push the speaker cones in a single direction and hold it there until it fails. The bad news...it's repair shop time.
Thanks for that. I have been researching this extensively. I'm pretty sure it the op amp out put to the front left and right channels. Once I get the amp disconnected from the many wired connections I shall properly bench test my theory. I just hope the parts are still available. Kind regards . matt
I shall give it a try. I will keep you updated on my progress. Thanks
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SOURCE: i need user manual for a sherwood RVD-9090RDS
hi,
I have the user manual for sherwood RVD-9090RDS with me. As it is pdf file i can't sent the same through the Fixya. If you can provide your email id then i will sent the same to you email address.
OK
Testimonial: "Hi thank so much for your reply thats grate my email address is [email protected] And thank you again Terry "
SOURCE: Marantz sr8001: standby light blinks rapidly,
Hello there Ed.
For anyone that has ever had such an issue with a MARANTZ SR series (6001. 7001. 7002. 8001...etc...) issue a question and I do HAVE the answer.
I could be just anything, or just the low quality binding posts used by MARANTZ for that.
Please describe to me in details how you've connected your speaker wires at the back, and give me description when and how did this problem came up.
Kind regards
Evangelos
SOURCE: SHERWOOD RECEIVER 6108. I
Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on. Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up. You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it. If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good. If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech. Check for loose speaker connections as a root cause for intermittent shutdown.
SOURCE: i would like a manual
Here is an official link for you to download the requested user manual. Note that the user manual for RVD6090 and RVD 6095 are the same, according to the Sherwood USA (take a look at this link, at the Discontinued Models you can locate the same manual for both devices)
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Stelios
direct fixya link: http://www.fixya.com/users/technical114
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hi there again. thanks for all the input. additional information on the problem. it only seems to happen if the volume is turned up over 25 or more. any more help would be great thank you
Could be a "poor" solder connection causing DC leakage problems. Use a "clenched fist" to lightly vibrate top, bottom, sides of chassis and see if issue appears/disappears.
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