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New Thread for SD's A4 [message #24576]

Sat, 30 January 2016 12:42

Shaun_Musings
Messages: 323
Registered: April 2009
Location: Reading, MA

Senior Member

Starting a new thread to avoid irritating people

The problem with the Internet is anyone can write anything; when searching for a replacement for the three transistors on PC602, someone said NTE123. Now if I am searching, I immediately write 'NTE' instead of 'Substitute.' I am rarely brand loyal, but too much misinformation.

All three transistors on PC602 are NTE129. Two are new; the one on the bottom was an older one I reused from a different misplacement. I should have replaced that one, too, but somehow I didn't. Retested (rounded the numbers).

+10
-25

Before I had +9, so not sure where the extra volt came from. On PC502, the red wire connection is dubious, at best (It had a lifted pad, and when I went to put it back down it broke off.) I have new copper traces (tape) and so I'll replace that. At the very least the traces will be cleaner.

I will also double-check the resistors, as one of them did burn up a while ago, and who knows if some of them might have drifted or so over the years.

Born on the Baaaaayou (Ok, in Massachusetts)

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[Message index]

		New Thread for SD's A4 By: Shaun_Musings on Sat, 30 January 2016 12:42
		Re: New Thread for SD's A4 By: stevem on Sat, 30 January 2016 13:16
		Re: New Thread for SD's A4 By: pleat on Sat, 30 January 2016 13:58
		Re: New Thread for SD's A4 By: Shaun_Musings on Sat, 30 January 2016 17:34
		Re: New Thread for SD's A4 By: Shaun_Musings on Sat, 30 January 2016 19:45
		Re: New Thread for SD's A4 By: chicagobill on Sat, 30 January 2016 23:31
		Re: New Thread for SD's A4 By: Shaun_Musings on Sun, 31 January 2016 08:11
		Re: New Thread for SD's A4 By: stevem on Sun, 31 January 2016 06:38
		Re: New Thread for SD's A4 By: Shaun_Musings on Sun, 31 January 2016 14:03
		Re: New Thread for SD's A4 By: Shaun_Musings on Sun, 31 January 2016 21:28

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