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Gareth Magennis Gareth Magennis is offline
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Default Crown schematic, anyone ?



"Arfa Daily" wrote in message ...



"Gareth Magennis" wrote in message
...


"Arfa Daily" wrote in message ...

Anyone got the schematics for a Crown XLS5000 ? I'm most interested in the
board that the mains comes in to. There's a bloody great disc something
inside a big lump of heatshrink, and serious flames shoot out of it before
every trip and fuse in the workshop goes out ...

If I bring it up on the variac, I can't get beyond about 20 volts before
the
poor thing is jumping off the bench, so there's a good short on there
somewhere. I initially thought that the disc might be a big VDR that was
short, but looking up the part number on the second one that's on there
for
the other half of the amp, it appears to be an inrush thermistor, so I
guess
whatever is short, must be south of that ...

Arfa






Hey guess what? Today I received a Crown XLS 602. (a baby by
comparison)
And guess what? The mains Transformer is open circuit.

This TX is marked "NRE Electronics Manufacturing Co Ltd.
08/2006"

Dunno if that makes it from the same source or not.



Cheers,


Gareth.



Certainly the same as Phil's one. I don't know who made the one in my '5000.
There's nothing I can immediately see to identify it, but there may be
something when it's out - if of course the owner goes ahead. It's going to
need a pair of spanners big enough to take off tractor wheel nuts ... :-)

Arfa





The customer said it had been in storage the past 2 years. He fired it up
today and it blew all the main fuses in his gaff.
So sounds like it may have been short like yours and Phil's, then blew open.



Gareth.