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

Phillco 7053 CRT Tester
#1

I picked this up a few months ago.  A thorough cleaning and a little polishing showed it to be a very well-preserved circa 1950 electronic thing  (I actually do know what it's for).  I have only two CRTs--a 1950 electromagnetic and a 1948 electrostatic, and this has only two adapters, but they fit both of the tubes, so I may be able to put it to some practical use.  But for me it's basically a new toy. 
 
[Image: https://lh3.googleusercontent.com/-JGiQd...207053.JPG]
 
I have no documentation for the unit, so I cracked it open to see what I could figure out.  There were only three "usual suspects"--two resistors and a paper cap--so I replaced them with on-hand components.  I cleaned the single rotary switch and the pots with CRC electronic cleaner.  Both pots work correctly.  The transformer is marked 6.3V and 220/0/220V with 117V line.  I put it on a variac at 117V, and I got 6.7 and 240/0/240.
I haven't checked the NE45 bulb, but it looks OK.   
 
[Image: https://lh4.googleusercontent.com/-E-s48...207053.JPG]
 
So, I'm first asking if anyone knows where I can find instructions for the 7053.  I've looked around, but haven't seen anything available except a couple of units with instructions for sale at some previous time.
 
If no instructions are available, can someone give me a clue how use this thing (remembering that I know little about radio electronics and less about television)?  May immediate goal would be to get to the point where I can connect it to a CRT and make the light bulb glow.
 
Thanks much.

PS:  I haven't been on the Phorum for a while.  I have seen the new look.  And it is good.
#2

Chuck may have a manual for it.
Terry
#3

Repair Bench was the first place I looked, and Chuck sez:
"Please note, I do not have service info for TVs, CD players, Stereos or any other consumer electronics that may be branded 'Philco.'
I only have info for antique Philco radios from 1928 to through 1947."
But thanks, anyway.
#4

Replace the bumblebee cap too! Sorry I do not have instructions either.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
What do I have? Philco 655
Hi Adam, Others may know more than me, but it was not uncommon for Philco to run out of cabinets and use one for a new...MrFixr55 — 02:51 PM
What do I have? Philco 655
Haven't been on here in a while, and it's been a while since I've worked on a Philco.  I picked this up a while back, an...adamrobertg — 08:10 AM
Clear Schematic for 41-255
Hello Ross, We have all been there don't worry the guys here have you taken care of !! Sincerely Richardradiorich — 09:35 PM
Clear Schematic for 41-255
What's really funny is I looked at the pages and saw 255 and it took me 30 sec of looking at the schematic trying to fig...RossH — 05:19 PM
Clear Schematic for 41-255
Ross, sorry, clicked on the wrong one. here's the down load for the 41-255 as an attachment.klondike98 — 04:40 PM
Clear Schematic for 41-255
RossH - Were you looking at our copy of the 1941 Yearbook, or one that you found elsewhere?DaleHCook — 04:12 PM
Clear Schematic for 41-255
Ditto. Perfectly readable here. Monitor or computer problems?!rfeenstra — 12:10 PM
Clear Schematic for 41-255
I have just gone to the link Gary provided in #2, the 1941 yearbook, and I do not see any whatsoever small print that I ...morzh — 12:00 PM
Clear Schematic for 41-255
Thank you for scanning it, but this for the 220 and 225.  I need the one for 250 and 255.  The one I have, which is many...RossH — 11:32 AM
Clear Schematic for 41-255
The scan from the Philco library was directly from a 1941 Yearbook. Not sure what is going on if you can't read it. I ...klondike98 — 10:50 AM

[-]
Who's Online
There are currently 2000 online users. [Complete List]
» 1 Member(s) | 1999 Guest(s)
Avatar

>