On 26/03/2016 10:22 PM, Mark Zacharias wrote:
"Trevor Wilson" wrote in message
...
On 25/03/2016 9:48 PM, Mark Zacharias wrote:
How is it a grown man cannot understand the concept of keeping two wires
separate?

Fixed a Yamaha RX-A2010 with a blown channel back in December.

Under warranty.

Big job.

Cautioned him on speaker hook-ups, gave him our hand-out sheet
explaining speaker connections,
which also contains explicit warnings about shorting wires etc.

Nevertheless he brought it back this week with the same channel blown
again.

It was all I could do not to just go off on the guy. He admitted fooling
around with the wires while the unit was powered up, and that the wires
had crossed. Exactly the sort of thing I had "educated" him about.

****ing idiot. Lucky for him Yamaha is covering it again, and we needed
the work anyway.

**** for brains god damn idiot. I knew better that this when I was
sixteen ****ing years old!

I'm reminded of Chevy Chase's rant in Christmas Vacation...


Mark Z.



**I'm suprised that the ****box Yammy can't handle a short. Part of
the test procedure for all the old 1970s Marantz amps, was to throw a
short circuit across the outputs. If it didn't survive, it would not
be given back to the owner (until it did).

--
Trevor Wilson
www.rageaudio.com.au

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If I recall correctly that procedure used a variac and the test stopped
an a certain current (I think it was 4 amps) through the amp meter which
was the only "load". A modern amp would pass that test as well, but the
microprocessor-based turn-on and protection circuits would have to be
bypassed.

Mark Z.

**Apart from the Variac™, pretty much it. I must admit some trepidation
the first few times I was required to perform this test.


--
Trevor Wilson
www.rageaudio.com.au

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