Quote:
Originally Posted by Username1
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Good Morning - Just a quick note - Things to check - On pin 3-6 of V10 the vert output,
put your finger or a DVM probe on it with nothing attached and see if the line on the
screen moves up or down, or if you can put any 60Hz signal on it like from a Signal
gen, or radio speaker on it there should be deflection. If none - then you should
check for any voltage on the plate of V10, since there is no deflection, it should
be completely safe, looking for about 280V. If nothing, track through the T2
to see if you have it or if T2 has open windings. If you get deflection when
you touch G1 of V10, then you have to go Back into the Osc, Don't forget
to look at the feedback loop through R45, & 46.
Also, most important -
Since this tv worked before you replaced parts, keep an open mind to
the possibility that you wired something wrong, My money is on a
mistake in wiring or part placement. Also, see that 25ma current
reading for the cathode of V10, that is often printed where they
tell you not to measure the plate voltage, You can lift one side
of R51 and check the current, to see if the tubie is conducting.
Also be ready to check voltages on V9 as well.... Also -
The Vert Hold has a plug & socket in the schematic - If you
have this on your tv be sure to check that if you had to
undo it to work on the set.... Good Luck!
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Will do! - I'll check these tonight.
I'm always open to me making a mistake, perhaps I just haven't seen it yet. I did replace capacitors one at a time, while using tape to mark the wire connections (as to not lose track of the positions when replacing)
C2 did blow up - which is the reason why I replaced ALL capacitors at the same time, I probably should have replaced JUST C2 first and done testing.
I assume when I touch pins 3-through-6 of V10 it will cause the output plate of V10 to cause vertical deflection?
Why does the schematic say "DO NOT MEASURE" the plate output / Pin# 9 of V10? - The voltage doesn't seem THAT high?
08-19-2024, 08:59 AM
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