1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Television

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Recapped My Predicta Tandem, I don't know what to do
apERNA1985
Member
***
Posts: 60
Threads: 7
Joined: Feb 2018
City: paramus, nj
#47

01-15-2022, 05:05 PM
I finally had a chance to replace the Networks. I have to say Chris's networks are really nice. However I have 2 left over 30-6037-1, and 30-6028-2. The picture is a lot better but still not ok. It fills more of the tube, and I can see most of the vertical lines now. Also I don't understand it, but the white distorted patch moves from the top of the screen to the middle and then the bottom every 10 or 15 seconds, occasionally the screen will be filled with it, then it will go to a different spot. I'm still seeing twitchy lines on a diagonal going through the screen, they have been there since I disconnected the original diodes and replaced them.  Is it possible AC voltage is getting into the chasis and causing my distortion? The picture I have up is the grid pattern. Also should I try tacking on the 2 caps to try and bring voltage up?


Attached Files Image(s)
                   
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
RE: Recapped My Predicta Tandem, I don't know what to do - by apERNA1985 - 01-15-2022, 05:05 PM



Users browsing this thread:
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

[-]
Who's Online
There are currently 2184 online users. [Complete List]
» 1 Member(s) | 2183 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Television