[Gllug] Nasty monitor - giveaway

[Steve Nicholson]

On Wed, 2003-05-14 at 15:52, Alistair Mann wrote:
> IME, this is more likely a poorly soldered joint; it takes a while for the 
> thing to warm up, so until it does it switches state frequently. 
> 
> Best evidence for that is to leave the thing alone in a hot room and in the 
> sunshine. Is the problem reduced? That's a bad soldering problem. Solution 
> depends on whether it's in guarantee, or if you enjoy 'doing hardware'.

Couldn't help myself from posting on this but bashing the case (taping
lightly) also helps find solder problems:).  Common thing we used to do
with TV's (back in the old days) with the back open was genetally tap
the PCB with the back of a screw driver.  This helps narrow down finding
the area with joint or cracking problem.

alignment guns will be 3-4 variable resistors often on the tube base
pcb. sometimes they also have a focus adjustment which is next to the
LOPT transform (has think cable going to top tube), usually a big pot
since it's high voltage with a plastic insulator.

HTH
Steve.



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