To cut a long story short (probably not actually), I purchased a brand new Marantz SR-8001, off of eBay some 6 months back. It cost me $1787 AUD shipped from Hong Kong (HK) as opposed to $3499 AUD in retail stores here in Oz.
From initial connection, it was going into Protect Mode. Notified the seller in HK and they arranged to collect it and repair as required - found dodgy PCB and replaced it and shipped it back, at no cost to me - all good so far.
Another 2 months down the track, one morning at low volume, listening to FM radio the unit made a loud banging noise and then switched off with the stand by light flashing rapidly - wouldn't turn back in again etc. Contacted seller again and they eventually agreed to take it back to look at again, but at my expense to ship it back to HK ($199 AUD). This was back on the 14 March 2008. Tonight I received an email from the eBay seller advising the following:
We went to Marantz to understand the situations. Both of the 2 times the fault was caused by a short circuitry in the speaker connections which burned out the amplifier module. According to Marantz, this is not uncommon. If your speaker cables has a bit of loosing wires or even on your speaker console there is a slight chance of touching between the positive and negative probe, it caused a short circuitry on the amplifier side. For example, a maid comes to your place to clean, the connectors on the speaker side accidentally touched each other. In addition, if your speakers are connecting to more than one amplifier or if one channel of your amplifier is driving more than one speaker, it will cause similar problems. In other words, only one speaker can be connected to one amplifier channel (a one-to-one connection) at any given time. The problem will not be caused by itself and we have an official report from them about what they have replaced and the possible causes. In fact, both of the repairs they could have charged us due to misuse. We understand this is not what you would like to hear but this is the brutal fact.
Not only did I take offense to this, but I would like to pursue this issue further, possibly with Marantz HQ USA. I use plastic Neotech shielded banana plugs on both avr and speaker connections, so it is impossible to do what they have suggested. I am utilising the pre outs for the front speakers, to a Rotel RB991 and not connecting additional speakers to the front A speaker connections.
I have had 2 previous Yamaha AVRs (RX-V4600 and RX-V2700) hooked up that were purchased and designed for Australian use, with the identical hook up, with no such issue. I have "owned" this SR-8001 for 6 months now, but have physically had it in my possession and functional for less than 3 months.
Sorry for the "short" story, but I thought I would try and get as many of your valuable opinions as possible, as to how you think I should attack this. As the AC here in Oz is 230-240V and the HK units can run on 230V, could this have been caused by a incompatible power supply? I know the Oz Marantz units here have a specific power supply in them (looked inside my SR-5300). Anyway, thanks in advance for all of your good advice.