TIP: Click on subject to list as thread! ANSI
echo: tech
to: Matt Mc_Carthy
from: Roy J. Tellason
date: 2003-10-25 12:05:52
subject: batteries

Matt Mc_Carthy wrote in a message to Roy J. Tellason:



 RJT> I'm going to get stuff too much mixed up.  Oh yeah,  and there's 
 RJT> all those ground straps,  too... 
 MMC> ..........................

 RJT> I *KNEW* there were good reasons why I stopped working on this 
 RJT> stuff!   :-)

 MMC> Heh!  Well, you sure picked a 'winner' to start back into that
 MMC> stuff!  I don't believe there has been a monitor made anywhere
 MMC> with MORE junk in it and around it, and through it and wrapped
 MMC> around it than that NEC 3D!

I posted similarly in sci.electronics.repair,  and got a reply from one guy
that the same exact monitor was why _he_ was no longer in the business
either...   :-)

There's always the other NEC here too.

 MMC> Last one of those I worked on I think I recall the vertical heat
 MMC> sink was mounted in a way that made it impossible to remove the
 MMC> screw and nut that held the IC in place without actually pulling
 MMC> out the bottom board, or the picture tube!  With ALL the stuff in
 MMC> there, I pulled the socket from the tube and took IT out, as the
 MMC> yoke leads unplugged easily.

That sounds about right.  Though there's more to that CRT board than just
the yoke wiring,  there's all sorts of other stuff tied to it.

 MMC> Won't hurt to check the caps, but I'm pretty sure you will need 
 MMC> the IC.  That was one of the items I used to get from that 'mat
 MMC> electronics'.

Yeah?  Well,  I have the part number written down,  in case I get to
feeling really ambitious some day.  Don't know if I will or not though.

 MMC> Their catalog was a relatively thin newsprint type of paper
 MMC> catalog, but packed with stuff, including "repair kits" for many
 MMC> monitors.  The pictures of the kits showed all the parts, and had
 MMC> a listing of all the part numbers below the picture.  Best thing I
 MMC> ever had for trouble shooting, as I could look at the picture, and
 MMC> know exactly what parts to check.

Now that sounds pretty good.  I did a repair on a vcr a while back that
needed such a repair kit.  The darn thing was unplugged once and then
wouldn't power on again,  and I found the fuse blown and the single
switching power supply transistor dead shorted.  Replacing both got me to
the same place again.  A kit of parts from this one outfit for under $20
got me a whole mess of stuff,  and replacing all of that (resistors,
diodes,  caps,  and yes,  the fuse and switching transistor) got it working
again,  and it's *still* working -- 5-6 years later.

 MMC> You mentioned that they are still around, see if you can get them
 MMC> to put you on their catalog list.

I did?  Who was that again?  The name you mention doesn't ring any bells...

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