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Old 01-15-2014, 10:49 PM
kramden66 kramden66 is offline
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Join Date: Nov 2010
Location: Rockaway, NJ
Posts: 1,420
I tried to get a cathode ma reading using a .39 ohm resistor between the cathode and ground , the set came on but I still got no readings on the meter , so I decided to remove the .47 capacitor to see what it would do then I got readings , so I removed the resistor and just hooked the meter up between the cathode and ground , I was getting 220 to 222 ma and thought that's a little high , so I turned the horz lin till I got to 200ma , the sams instructions say no higher then 210ma and the schematic says 200ma , so I put it to 200ma , it will drift a little to 201 or 202 and sometimes to 199 but mostly hangs at 200 , it does shoot up to about 225 or so on start up but quickly drops to 200ma, the fly is just luke warm so it is not running as hot as it was , the anode is 22kv area with very little change when you turn the brightness up or down , so looks like its running ok , I will know better when I adjust the vert height and lin for a more uniform circle , my only fear is what if the lin is off and the only way to correct it so it is more uniform is to increase the ma ? I wont know till I do more with it on Thursday , now I just have to tweak the sound to get rid of a little buzzing and it looks like it is going to be ready for viewing.
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