GE roundie

[AiboPet]

Make sure your source INTO the Blonder Tongue (or whatever)...is getting a good connection with decent RCA cables. I sometimes have to pay attention that the inputs to my little transmitter are not picking up hum bars from all the other stupid stuff I have in the same cabinet. I used to get all worried I was having filter problems in one of the sets....only to find out I was having issues with the source material.

I know it seems a bit elementary....but I've overlooked this a couple times before and JUMPED to the "worst case" conclussion.

[DaveWM]

pic is better than this, the motion added some bluriness

[DaveWM]

Under the heading of not leaving well enough alone, I was thinking about the horz eff coil setting last nite. the fact that the dip took place with a large bit of the slug out of the coil (I did drive it down it never got better) I got to thinking maybe one of the 3 caps that connect across the coil may be bad. I checked the .0022 that connect directly across it on the board, but I never checked the two .068 that are connected below the chassis. So even though I have it all back together I think I must pull it out again and check those. I generally just clip on lead, test, and then use a pig tail to reconnect if ok.

[DaveWM]

I have a slight purity issue on the bottom, tends toward greenish, I think its the yoke as it droops quite a bit due to plastic fatigue. here is a better pic with flesh tones. I ended up going without the brightner.

[wkand]

Really nice job with this set, Dave. Very patient troubleshooting! I did not especially care for the screen image of Arizona beating my Seahawks, though! LOL!!

Very Nice set!!

[DaveWM]

Thanks, it was fun. I never got the eff coil figured out (why it has to be so far out for the dip) I checked the caps that are tied to it thinking something was wrong there, but they all checked out. I have some other yokes that I could use to see if I could improve the purity but its not that bad and its hot out in the garage so I will give it a rest. Besides the CTC-5 I have a very nice sylvania roundie console that needs to have the lens popped off (its good to go besides that). So I have others that need attention as well.

[DaveWM]

I putzed around with the purity a bit, the red blob was just a touch off center so I recentered and then reset the yoke, seems better now (green on the bottom is pretty much gone).

[timmy]

Originally Posted by DaveWM

I have a slight purity issue on the bottom, tends toward greenish, I think its the yoke as it droops quite a bit due to plastic fatigue. here is a better pic with flesh tones. I ended up going without the brightner.

with the yoke drooping i use flat card board at the end of the yoke and this cures that and it dont conduct emf.

[DaveWM]

finally got the vectorscope on this, and again while it can produce ok face tones the green just was not there. the vectorscope showed what looked like the petals laying down sideways, I tweaked the transformer in the phasing circuit and after about 3/4 turn the flower stood upright and bingo nice greens.

I hint that something is not right is when you get decent flesh tones, yet the tint control does not do much in the way of adjusting.

don't settle for brownish greens, and don't go nuts trying to improve greens with drive and background controls. I will get the Wiz of Oz on it later for a nice screen shot.

[DaveWM]

here are some shots with the green (and tint) working now..