A51 fifth channel defect

[LuckyLuke]

Hi,

After a night of some really bad weather the fifth channel does'nt work anymore.
all other channels 1-4 work fine, only 4 leds are lit blue and 1 not at all.
does anybody know if there is a simple fix for this? change a fuse or something??
or does this mean its fubar?

strange thing is it wasn't even on standy that night, my other hifi are ok

t.i.a

[Chris D]

Luke- I think one other person here in the Club has experienced that. You can search here, as I don't recall what their fix was. I'd recommend a quick call to Parasound tech support, and it should straighten things out.

[Peter Nielsen]

It sounds like your speaker cable run picked up a surge (from the air or from adjacent cable runs) and fried one of the output mosfets...

Not exactly a DIY fix...

Peter

[LuckyLuke]

Ok
The repairshop fixed it nicely now , but the channel doesn't heat up as much as the other channels, probably the bias.
Can i adjust this myself? the shop is a long drive...

tnx

[Peter Nielsen]

Ok
The repairshop fixed it nicely now , but the channel doesn't heat up as much as the other channels, probably the bias.
Can i adjust this myself? the shop is a long drive...

tnx

A lower bias (less heat) does no damage. Unless the repaired channel sounds worse, there's no reason to adjust it IMHO.

Peter

[LuckyLuke]

He Peter that sounds interesting,
if it doesn't damage the speakers i might considering lowering the bias on the other surround channel.
That saves some on the elec.bill and heat output.