[mythtv-users] OT - Life without MythTV

[Bill Omer]

On Mon, 2008-02-25 at 12:35 -0700, Brian Wood wrote:
> On Feb 25, 2008, at 12:20 PM, Bill Omer wrote:
> >
> > You are correct.  My set is a CRT rear projection.  I believe the  
> > faulty
> > component is the Flyback Transformer.  I found one on partstore.com  
> > for
> > about $50.  I've been reading about some other people with this same  
> > set
> > having this exact same problem, and for all them it seems like  
> > replacing
> > the flyback was the solution.  Unfortunately, it's soldered to a board
> > and the power line to the tubes is *very* difficult to remove from the
> > transformer.  If I can figure out how to get that line out, I'll try  
> > to
> > replace the transformer my self.  If I screw it up, I also found an
> > entire daughter board (with a flyback) on partstore for about $150
> 
> Be very careful, make sure you discharge the HV before putting your  
> hands inside the unit. There are capacitors that can hold a charge for  
> many minutes after the set is turned off.

Other than leaving the set unplugged for several hours, is there another
way?  I've heard that some caps that just wont discharge unless you
short them.

> 
> You really should measure the high voltage after a flyback  
> replacement, but I suspect you do not have a voltmeter designed for  
> upwards of 20K volts.
> 

I've read 50kV.  Deadly ... easily.   By far not a safe project IMHO.

> Probably safer to go with the board replacement, but of course that'll  
> cost you another $100.