Forming Caps?

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jeffriesa
Junior tube assistant
Posts: 3
(2/10/04 6:27 pm)
  Forming Caps?
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Hi

Got a question regarding forming new caps in a export model. First off it is a SFTR 135W export version running at 240V.

Can i form the caps by slowly increasing the voltage on the voltage selector switch.

Voltage selector switch options: 100, 12, 127, 220, 240 and 260.

Or should i do the ght bulb limiter way?

Lastly how long should i do this?

Many thanks
AJ
 
ganzonimx
Hey get your own solder
Posts: 365
(2/10/04 6:51 pm)
  Re: Forming Caps?
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Just trough the switch and enjoy your amp, voltage selector in the adequate position for your wall outlet voltage!

Don't plug the amp in a outlet with 240V and the voltage selector in a lower rang!

I did that once accidentally with a ark welder and got fire work trough my workshop's electric installation, out the house, up the power line into the next transformer... the block was without light for the next 2 hours and 6 month later the transformer blew up definitely. Have to admit I bridged the brakes as they were underrated...   .

Fortunately the power company never found out that I was the  Mr. Newton junior...

Cris
 
GroundhogKen
Forum Moderator
Posts: 2256
(2/10/04 8:24 pm)
  Re: Forming Caps?
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If they're new caps, just solder them in, check your work and power up.

Don't forget to do the small electrolytic cathode bypass caps and the bias supply caps--not just the big power supply caps.

It does pay to change a few at a time and then check that everything still works. That way if you make a mistake somewhere you don't have to retrace the entire job.


Ken
 
 
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