Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Yamaha Stagepas 300 - followup

I only got back to this today , as no rush for it. The short plug-plug link
between the amp and its own speaker (amp sits in the speaker housing then
separate outlier sppeaker) has metal elbow 1/4 inch plugs, in touching
distance of the L speaker output is a metal handle . Maybe not original but
even so. L is the inverted channel and so metalwork of the plug is hot,
elbow rotates a bit , toyuiches handle and so blown amp. Nylon spiral wrap
around this rod-handle and some heatshrink over the elbows. Straight speaker
plugs would be ok if plastic , if metal then would await a screwdriver or
something to bridge that gap.
L and R only applies to extraneous inputs, no pan control on the 300
I spent another 20 minutes trying to spot the difference between the PA ,
there must be an inverter somewhere but nothing spied. Anyway up and going
now with repaired tiny D-Class power amp , matching its unsullied fellow.


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Default Yamaha Stagepas 300 - followup


"N_Cook" wrote in message
...
I only got back to this today , as no rush for it. The short plug-plug link
between the amp and its own speaker (amp sits in the speaker housing then
separate outlier sppeaker) has metal elbow 1/4 inch plugs, in touching
distance of the L speaker output is a metal handle . Maybe not original
but
even so. L is the inverted channel and so metalwork of the plug is hot,
elbow rotates a bit , toyuiches handle and so blown amp. Nylon spiral wrap
around this rod-handle and some heatshrink over the elbows. Straight
speaker
plugs would be ok if plastic , if metal then would await a screwdriver or
something to bridge that gap.
L and R only applies to extraneous inputs, no pan control on the 300
I spent another 20 minutes trying to spot the difference between the PA ,
there must be an inverter somewhere but nothing spied. Anyway up and going
now with repaired tiny D-Class power amp , matching its unsullied fellow.




Yamaha do kindly warn that if you do not use the speakers AND speaker cables
supplied, damage to the amplifier may result.

No mention of inverted outputs though.

How nice.



Gareth.


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