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Old 30th April 2005, 02:49 AM   #1
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Default "lift off " or "Houston we have a problem"

After countless hours and dollars, periodicals and posts , I am ready to power up my 2A3. Any words of wisdom before power up ?



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Old 30th April 2005, 03:13 AM   #2
karma is offline karma  Canada
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take cover
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Old 30th April 2005, 08:04 AM   #3
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Usa a variac and check voltages as you ramp up the voltage...

dave
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Old 30th April 2005, 10:07 PM   #4
EC8010 is offline EC8010  United Kingdom
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Make sure the room is absolutely quiet and sniff the air constantly.
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The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
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Old 1st May 2005, 01:42 AM   #5
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Quote:
Originally posted by EC8010
and sniff the air constantly.
for the totally disgusting, but too familar, smell of components with the smoke letting go?

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Old 1st May 2005, 02:48 AM   #6
adason is offline adason  United States
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variac is the best, but if you dont have it, you can use incadescent bulbs

powering it trhough the bulb will tell you how much current it draws, if too much, bulb's too bright and eventualy burns depends on wattage

i suggest you test power suply separately first, lets say with three/four bulbs in series

good luck!
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Old 1st May 2005, 03:50 AM   #7
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Quote:

Usa a variac and check voltages as you ramp up the voltage...

Dave is correct...

Bulbs can be used also but being able to monitor the amperage says it all.

I suggest 5 or 6 shots of the hard stuff tonight followed by firing it up tomorrow.
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Old 1st May 2005, 04:42 AM   #8
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Default Lift off

As suggested I used the variac. I monitored the b+ and just had the rectifier in all was good 320 volts. I put all the tubes in and brought it up slowley......... 20 volts . I checked each ch seperately
same same . I went in ... turned out had a bad connection from the B+ ground bus to chassis ground(star ground for the world). IT WORKS .......... . Thanks to every one who answered all my dum nub questions.
Jeff
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Old 1st May 2005, 05:15 AM   #9
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Default Re: Lift off

Quote:
Originally posted by tenderland
IT WORKS .......... .
Yippy



what are you using it with? And how does it sound?

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Old 1st May 2005, 05:29 AM   #10
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Default set up

Speakers -- Fostex 167 - base reflex
audioquest cables - slate
SONY - X555ES CD PLAYER
NAD - preamp (not realy needed )

How does it sound - Very clean , no hum , a little harsh , not much bass...
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