10 Apr
2013
10 Apr
'13
2:08 p.m.
Message: 9
Date: Wed, 10 Apr 2013 03:46:39 -0700 (PDT)
From: Brian Roth <abacos_98 at yahoo.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Subject: Re: H780 power supply
Message-ID:
<1365590799.18092.YahooMailNeo at web141406.mail.bf1.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Thanks Dave,
?? I checked first with a load and then without. I have the main board out of it now so I
was going to replace the transistors and caps. The problem is the schematics on Bitsavers
is just a little blurry so I cannot make out the names and the transistors themselves(a
few of them) are unreadable.
Brian.
Brian,
I have a 174-page ~15.8MB PDF entitled ""1103_Schematics.pdf" that
appears to be clear enough to read the H780 power supply pages (parts
of the pages are blurry, but most areas seem to be readable). The PS
schematics are drawing number D-CS-5411776-0-1, Rev. M, dated 7-22-77,
and are three pages. I'll go ahead and send them to you (~154KB). Or
I could email the whole 174-page file.
Bob