Unit powers up. After 5-7 seconds, the relay(s) energize at which time a slight "popping" noise is heard from the main right front speaker (only), then the source audio is heard from all speakers at normal levels. Approximately 30 seconds later, the unit shuts down. Per Yamaha instructions, I checked speaker connections, wiring and unplugged unit for approx one hour. No effect. Ideas, please. Thanks.
There is a known problem on recent model Yamaha's of this series which MAY relate to your problem.
Yamaha's are "special" and a doit-yourself-er probably should stay out of it, since the likelihood is he would only make it worse.
Are you a qualified technician?
Mark Z.
Mark - Thanks for your reply - I have since packed up the unit and have sent to Yamaha's Authorized Regional Servicer. Curious as to what the known problem is with these units. I've owned literally countless numbers of Yamaha receivers, ect, since the 70's Not ONE has failed or required any repair until this one which is only 16 months old. Regards - mark
There was a bad batch of 47uF 50 volt capacitors used in the pre-driver, DSP, power supply, and other areas of the receiver. Only a small percentage go bad, I suppose, but still higher numbers than one would normally expect from Nichicon, the vendor of those caps. The other day, I worked on one which appeared was probably the victim of a lightning strike. The customer said they were out of town and returned home and the receiver would go into protection. Almost dared me to call it a lightning strike and deny the warranty coverage. What had happened was that one of these caps had shorted on the DSP board, which had taken out a -12 volt regulator, thus setting off the power supply detect. Repaired this problem, then got a DC detect error, which is DC at one amp output. Another cap of the same type was bad on a predriver board. Replaced all such caps on the amp boards, but there's still dozens of those caps in that receiver. Simply could not go and replace all of them - even though Yamaha is relatively generous enough to me with their warranty rates. It would simply take too much bench time.
Mark Z.
I have a pair of computers. One already had the MB replaced, the other still runs though god knows why since half the electros are oozing. When it dies I'll put a new MB in it.
I remember when parts were life tested BEFORE they were shipped from the factory.
Mark - Thanks again for your information and insight. Was informed by Norman's Elecrtronics, Atlanta, Yamaha's Regional Servicer, to expect
2-3 weeks to repair the unit and return. Not sure if they will share the specific results of the diagnostics and repair. If they do, I will share with you. Where are you located? Regards, Mark
We're in Wichita, KS. Also an authorized Yamaha servicer. Yamaha is probably the best company I deal with, mainly because their #1 tech guy, Alan Benning, is such a good guy to deal with. Things will probably change when he retires in 2 or 3 years.
A shame if it goes that way...
Our address is:
Electronic Wizards, Inc.
535 N. Woodlawn Suite 350 Wichita, KS. 67208316-686-8324 (voice)
Mark Z.
From the perspective of a dealer for Yamaha, I suspect that the eventual retirement of an asset like Alan will be a loss, but dealing with Yamaha will not change that much. I have been working with them for nearly 30 years and the company is, in general, one of the best to deal with. Alan is a great technical resource, no doubt, but the other folks there are also some of the best in the business.
BTW, I would seriously suggest that anyone who has a Yamaha product to get serviced NOT send it to Normans. Definitely send it to Mark at Electronic Wizards or to United Radio in Syracuse, NY if you don't have a local who is experienced with the product.
Leonard
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I suspect that when Alan retires, they'll move Jim back over from the consumer help side. He's good technically, but kind of a bitch when it comes to approving extra labor on a repair. Yamaha's basic rates are on the low side, but Alan approves double labor with just a phone call. Fixing a blown channel on a RX-V1500/1600 or 2500/2600 isn't easy, and 55.00 or so doesn't really cover it.
Mark Z.
A bit unnerving to see the post about Norman's. I am curious to know what the word on the street and why the "knock" When I called Yamaha's automated number to get information on their Authorized Servicer in the Nashville, TN area, the system retrieved a company in Nashville that has gone out of business and an alternate company in Austin, TX. When I called Yamaha's Corp. HQ, they gave me Norman's and said one of their best. So, off to Atlanta my receiver goes. One of their Techs called my Friday late and said he could not replicate the problem, could not see (on the scope) or hear the 'pop', and when he accessed diagnostics, he did not see a code that would indicate an overload shut-down fault. Said that he was going to install some new caps included in a retrofit kit that Yamaha has and leave it in over the weekend. If unit is still powered up today, then it's fixed. If not, it's off to Mark Z. Thanks to all for the posts and information. - Mark
Sounds to me like Normans' has got it handled, though.
mz
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