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Philco PT6
bfrohwein
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Posts: 152
Threads: 11
Joined: Feb 2013
City: Dallas, TX
#1

08-24-2014, 04:05 PM
Howdy all!

My mother sent me her PT6 to clean/replace the volume control cause it's crunchy at lower volumes and she said the pilot lamp was blowing out every 20 to 30 power cycles.

So I got to thinking about it. I came across an article a while back on the ARF. what do you all think about adding two 6.8 volt 5 watt zeners in series to stop the surge when it's first powered up?

as for the surge.. Would that be because I used 33 uf caps for 22A and 22B? if I remember correctly (it's been a few years since I redid this set) I used 33 because I was getting some hum using 22uf. when it's warmed up the voltage @ the pilot lamp is 5.7 volts.

the placement on my drawing was just random, btw.. Icon_wink

[Image: http://i1303.photobucket.com/albums/ag14...7e4040.jpg]

[Image: http://i1303.photobucket.com/albums/ag14...a73194.jpg]

Thanks for your input!

Bret
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Messages In This Thread
Philco PT6 - by bfrohwein - 08-24-2014, 04:05 PM
RE: Philco PT6 - by morzh - 08-24-2014, 10:41 PM
RE: Philco PT6 - by Mondial - 08-24-2014, 11:08 PM
RE: Philco PT6 - by bfrohwein - 08-24-2014, 11:28 PM
RE: Philco PT6 - by Mondial - 08-24-2014, 11:42 PM
RE: Philco PT6 - by Arran - 08-25-2014, 12:52 AM
RE: Philco PT6 - by bfrohwein - 08-25-2014, 02:18 AM
RE: Philco PT6 - by bfrohwein - 08-26-2014, 10:28 PM
RE: Philco PT6 - by bfrohwein - 09-01-2014, 12:39 PM



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  1. The PHILCO Phorum
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