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

DuMont RA-112 TV: Next Project
#4

Simon -
My shop is the corner of the basement under the family room. I have to confess, the shelves are from IKEA. But the chassis stand is my doing. I need a proper workbench. I currently use a 37 year old wooden table from when I first got out of school. It works.

Gary -
The installed CRT is weak and has a brightener - not a good sign. The spare, supposedly tests good. Also, I know someone who has a good one.
I do need to order some HV caps. I think I have all the others (less mica which should be OK).
I have a converter or two. Also there are HDMI to NTSC modulators (need to investigate):
https://www.ebay.com/itm/185023854299


The plan is to first get the audio working via the FM radio. The problem with that is I'll need to free up the tuner first. It's not totally seized, but...

I also have access to a test CRT when it comes working on the video. I was warned about fooling with a real 19AP4 while debugging. It has a metal cone with ~13KV on it. Wouldn't want to get too close Icon_eek.

Can't think of anything witty.
Greg O.
Whitehall, PA


Messages In This Thread
DuMont RA-112 TV: Next Project - by Greg - 10-07-2021, 10:53 PM
RE: DuMont RA-112 TV: Next Project - by GarySP - 10-08-2021, 10:10 AM
RE: DuMont RA-112 TV: Next Project - by Greg - 10-08-2021, 12:34 PM
RE: DuMont RA-112 TV: Next Project - by MrFixr55 - 11-08-2021, 03:00 PM
RE: DuMont RA-112 TV: Next Project - by radiorich - 11-08-2021, 07:56 PM
RE: DuMont RA-112 TV: Next Project - by Greg - 03-04-2022, 11:39 PM
RE: DuMont RA-112 TV: Next Project - by Greg - 05-05-2022, 09:02 AM
RE: DuMont RA-112 TV: Next Project - by radiorich - 05-05-2022, 09:21 AM
RE: DuMont RA-112 TV: Next Project - by Greg - 05-05-2022, 09:29 PM
RE: DuMont RA-112 TV: Next Project - by TV MAN - 05-06-2022, 10:21 AM
RE: DuMont RA-112 TV: Next Project - by Greg - 05-12-2022, 10:52 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
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

[-]
Who's Online
There are currently no members online.

>