My Brand New CTC-7! - Videokarma.org TV - Video

DaveWM · #1 07-01-2015, 12:21 PM

check the resistors I mentioned.
check pin voltages of vert tubes.

SwizzyMan · #2 07-01-2015, 12:24 PM

Quote:

Originally Posted by DaveWM

check the resistors I mentioned.
check pin voltages of vert tubes.

Alright will do... The horizontal hold is so incredibly bad. What should I check in that section?

SwizzyMan · #3 07-01-2015, 01:00 PM

Getting about 1.48 megs on the 1 meg resistor

DaveWM · #4 07-01-2015, 01:04 PM

what is the HV?what about the 1.8 meg? and the 10k from the BB to the 1 meg.

SwizzyMan · #5 07-01-2015, 01:06 PM

1.8 meg is fluctuating from 1.7 to 1.9 to 1.8

Zenith26kc20 · #6 07-01-2015, 01:06 PM

Way too high! Whenever I replace vertical section resistors I use larger wattage if they will fit and look right. If it is a 1/2 watt I use 1 watt. Vertical parts take a pounding from the waveforms and break down the resistors. RCA ran the vertical hot on the side chassis sets.

DaveWM · #7 07-01-2015, 01:13 PM

you might have to take the 10k out of circuit to test. Not sure I understand the flux reading on the 1.8 should be steady. the 1.0 being high may be a prob but you should have enough height adj to compensate if that is the only thing off.

before replacing a bunch of parts you should take voltage readings and try new tubes.

DaveWM · #8 07-01-2015, 01:16 PM

oh and number one thing to check would be the B+. Maker sure you are getting the correct line voltage in and the correct B+ coming out. If the set uses 5U4's try a fresh one or two of those.

SwizzyMan · #9 07-01-2015, 01:22 PM

Quote:

Originally Posted by DaveWM

oh and number one thing to check would be the B+. Maker sure you are getting the correct line voltage in and the correct B+ coming out. If the set uses 5U4's try a fresh one or two of those.

This one doesnt use 5u4's but there is a bumblebee right at the ac interlock

SwizzyMan · #10 07-01-2015, 01:20 PM

Quote:

Originally Posted by DaveWM

you might have to take the 10k out of circuit to test. Not sure I understand the flux reading on the 1.8 should be steady. the 1.0 being high may be a prob but you should have enough height adj to compensate if that is the only thing off.

before replacing a bunch of parts you should take voltage readings and try new tubes.

10k is reading 14k

DaveWM · #11 07-01-2015, 01:24 PM

hard to say since I don't know what you are doing with the pots. It "could" be the issue (lack of vert) but I have seen much larger drifting and still be ok. if you had been off like 10x then for sure.

check the tube voltages, try tube subbing and get back to me on the B+ voltages.