Quote:
Originally Posted by Yamamaya42
yop. those damn 1500pf caps are no good.
put in the new resistor the 109V came up to 112V.  not much better.
unhooked R39 (R130 on riders/RCA) the one feeding the voltage to the IF, and it came up to 139v.
they all gotta go. |
Similarly you could remove R26 feeding B+ to the tuner, reinstall R39 and get an indication of whether it's mostly in the tuner or IF section. Of course there's the possibility that more than one caps are leaking. You can even go so far as to put a dc ma meter in series with R39 and you'll see the accumulative draw from each progressing stage. What would be very interesting is to see current draw with and without the RF and IF tubes installed. If it's the caps you'd still be seeing significant current being drawing without the tubes in. Time consuming work but very rewarding if you can narrow down the point of failure.