Thanks Bruce, I will try that one, seems to be a cosy and useful 'club' .
I knew I'd get help through TN! The width of knowledge and wisdom
is immense within this group. Maybe thanks to Mr Yoda?
Inge
----- Original Message -----
From: <[log in to unmask]>
To: <[log in to unmask]>; <[log in to unmask]>
Sent: Monday, November 06, 2006 2:57 PM
Subject: RE: [TN] NTC:is there a audiofil out there?
Ingemar -
Throw up a posting on
http://groups.google.com/group/sci.electronics.repair. You'll have to
register w/the group in order to post, but there's a good chance someone
there will be able to help you out.
Bruce Tostevin
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge
Sent: Thursday, November 02, 2006 5:26 PM
To: [log in to unmask]
Subject: [TN] NTC:is there a audiofil out there?
Hi all,
just taking a chance, 1,000 TNetters, among all there may be somebody
with a
5 channel amplifier Yamaha DSP A-990. I like my old machine, 6 years
old, a
fantastic sound and video processor. Happened to short the outputs and
blew
most of the 14 power darlington transistors. I have repaired with newer
equivalents and all e-c-b voltages are OK, but 5 seconds after start,
there
is a safety relay that switches power off. I can't figure out why and
what
the sensors react on. Complicated electronics. Now I just wonder if
someone
happen to have such a machine and if there is also someone who have
schematics. Yamaha don't not respond positively on my request, say they
have
no service on such a obsolete amplifier.
Regards
Ingemar Hernefjord
SMW
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