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Old 02-17-2005, 03:26 PM
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yagosaga yagosaga is offline
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Join Date: Jan 2005
Location: in Braunschweig
Posts: 690
This tv set is an exercise in being patient (like most of the vintage sets..)

c611and c610 recapped, c603 too with 0.01 at 2kv. c606 (pin 7, grid of 6CG7) tested OK.
c603 is designed for 1kv. The results: -23v at grid of 6CB5 and horizontal output current 190ma after recapping. The usual suspicious are OK.

Values for the first triode of 6CG7:
!!! The reading of the test meter at the grid (pin 2) is -3v instead of -27v. !!! No sync while contacting with the testmeter - it was not possible to adjust correct synchronisation while testing.
!!! Testmeter at kathode of 6CG7 (pin 3) reads +12.6v instead of +5v. !!! Ohmmeter reads 228K between grid and ground, this seems OK.
Between grid (pin 2) and ground 1.27M, has to be 1.3M according to the manual. OK.
R608 with 156K, OK.
All capacitors on the horizontal oscillator unit are now freshly recapped.
6CG7 used and new, tested with 10ma, good.

c609 has 0.0047 instead of 0.047. The guy, who had done the recapping job before must mistaken it. (Or not?). I replaced c609 with 0.047. Now -18v at grid of 6CB5 and horizontal output current 210ma.
Without c609 I read -22v at grid of 6CB5 and horizontal output current 200ma. What are the correct data for c609?

c604 ist OK with 1000 (or 1nF).
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