Dont do this at home
May 25, 2015 2:10:28 GMT -7
Paul (TRANE), heynewguy (Ol’ Bill), and 3 more like this
Post by dixiechicken on May 25, 2015 2:10:28 GMT -7
DC here!
The title is a joke - because I dont know how many the Z brothers here are comfortable
with mucking about inside their amps.
This is meant as a tip for those who is comfortable servicing the innards of their amps -
always take the usual precations before you oppen up and start doing anything.
This is actually about my power amps to the pa system that a friend of mine built decades ago.
On two of the amps the on off switch was stuck in the on position regardless how I flipped it.
This is a problem ecause the amps doesnt have any realay timing delay -
so their is always a power surge when you turn on any of the power amps.
(these power amps are all transistors of course)
If all the amps happen to be on when you plug in the powercord -
the main fuse in the house blows and the whole basement goes black.
The bands in the studio dont have any access to main fuses and the electrical central in the house -
the landlord dont want/need the tennants to muck about there.
So I bought two new double - pole on off rocker switches --> 6 amps/250 volts --> I'm in sweden lols.
On one side of the switches there goes two yellow cables to the primary side of the power transformer.
So I changed the two switches on the two amps out - carefully observing everything was pput into the proper places.
Aka re-wiring it exactly as it was.
I plug in the mains and turn the amps on - nothing, no lights, no hum, zilch nada.
Thinking deep thoughts - looking over my wiring again - yes it looks good, nothing wrong that I can see.
Turning on the amps again - still nothing.
Hmmm checking the mains with my Route66 - yes there is juice in the mains sockets.
Thinking again getting slightly deperate - now I have an electrical engineering education - I know the usual stuff fairly well.
Looking at the darn power transformers -
After a while I thought - aha the cables to primary side of the transformer must be isolated with lacquer - much
the same like the copperwires in a loudspeaker coil.
I bring out my knife and start gently scraping the surface at the end of the transformer wires.
Voila the color changes from a duller reddish brown to a gleaming metallig coppery hue.
Put the wires back into the sockets of the rocker switch and turn on the power amps.
A heavenly choir of slight hum, lights a little hiss even.
I guess the lesson here is that you should always think twice when dealing with your amps.
Cheers: Dixiechicken
The title is a joke - because I dont know how many the Z brothers here are comfortable
with mucking about inside their amps.
This is meant as a tip for those who is comfortable servicing the innards of their amps -
always take the usual precations before you oppen up and start doing anything.
This is actually about my power amps to the pa system that a friend of mine built decades ago.
On two of the amps the on off switch was stuck in the on position regardless how I flipped it.
This is a problem ecause the amps doesnt have any realay timing delay -
so their is always a power surge when you turn on any of the power amps.
(these power amps are all transistors of course)
If all the amps happen to be on when you plug in the powercord -
the main fuse in the house blows and the whole basement goes black.
The bands in the studio dont have any access to main fuses and the electrical central in the house -
the landlord dont want/need the tennants to muck about there.
So I bought two new double - pole on off rocker switches --> 6 amps/250 volts --> I'm in sweden lols.
On one side of the switches there goes two yellow cables to the primary side of the power transformer.
So I changed the two switches on the two amps out - carefully observing everything was pput into the proper places.
Aka re-wiring it exactly as it was.
I plug in the mains and turn the amps on - nothing, no lights, no hum, zilch nada.
Thinking deep thoughts - looking over my wiring again - yes it looks good, nothing wrong that I can see.
Turning on the amps again - still nothing.
Hmmm checking the mains with my Route66 - yes there is juice in the mains sockets.
Thinking again getting slightly deperate - now I have an electrical engineering education - I know the usual stuff fairly well.
Looking at the darn power transformers -
After a while I thought - aha the cables to primary side of the transformer must be isolated with lacquer - much
the same like the copperwires in a loudspeaker coil.
I bring out my knife and start gently scraping the surface at the end of the transformer wires.
Voila the color changes from a duller reddish brown to a gleaming metallig coppery hue.
Put the wires back into the sockets of the rocker switch and turn on the power amps.
A heavenly choir of slight hum, lights a little hiss even.
I guess the lesson here is that you should always think twice when dealing with your amps.
Cheers: Dixiechicken