Re: PTK195 RCA

Jason D. wrote: 
On 11 Dec 2005 06:18:25 -0800, "rm502@xxxxxxxxxxxxx"
<rm502@xxxxxxxxxxxxx> wrote:


Len:  Go to this discussion on Sci.electronics.repair re your problem.

http://groups.google.com/group/sci.electronics.repair/browse_thread/thread/bc330b1ed7dc66f8/691677def7a68368?lnk=st&q=ctc195+top+pincushion&rnum=1&hl=en#691677def7a68368

Also, I have the service data on this Chassis if you need something

from it. 

Robert McPherson
Louisville, KY


Don't worry about the chassis, don't adjust! The reason for fuse blown
was is the convergence power supply that is blown.  It is small board
mounted on the black plastic panel.  Held down by 1/4" hex bolts.  Get
that convergence power supply fixed.  There are two types of this by
the way.  One use big black IC on Z shaped heatsink, other one is
small U shaped heatsink.  Both have different appoaches to repairing
those two types.

Cheers, Wizard 
Hello again,

I finally got a chance to work on this thing! The convergence power supply is not running (as Wizard said), it's the one with the STK730-130. I don't have the full schematic but I do have a photocopy of a diagram of the power supply from a training manual. Is it safe to try to run this with no load to make sure there is no heavy current draw from the convergence board, which I understand will shut down the suppy?
I haven't found anything bad with my meter and I suspect the STK is not firing up.
Thanks for the help,
Len
.