View Single Post
  #254  
Old 01-20-2015, 12:56 PM
DaveWM DaveWM is offline
VideoKarma Member
 
Join Date: Feb 2009
Location: Orlando FL
Posts: 5,607
I have him running down bias voltage on the CRT. they just seem way off.

I think the best idea is set it up for the decent brightness raster (not using the setup procedure since that does not work). with a solid 25kv from full bright to cut off.

then

get both the silvertones out, and compare one CRT lead at a time mainly looking for the bias between K and G1 and the required screen voltages, maybe even the horz out cathode current. set up both with rasters of approx equal brightness and HV both at 25kv.

tough dogs require really thinking thru the issue, in this case getting the HV under control (by having good shunts that do not short out) is just eh begining.
the hard part is determining just how bright max bright, how strong is the CRT, and whats going on as the controls are adjusted.

Last edited by DaveWM; 01-20-2015 at 01:00 PM.
Reply With Quote