1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
VTVM EICO 232 LM317 BATTERY CHANGE
Bradley Rush
RadioMonkey
***
Posts: 220
Threads: 56
Joined: Oct 2011
City: Lompoc CA
#1

12-23-2016, 07:23 PM
Did this a while ago. Transformer fused in out. Very stable ohms.


Attached Files Image(s)
   
Find
Bradley Rush
RadioMonkey
***
Posts: 220
Threads: 56
Joined: Oct 2011
City: Lompoc CA
#2

12-23-2016, 07:30 PM
More of the LM317 battery replacement


Attached Files Image(s)
   
Find
Bradley Rush
RadioMonkey
***
Posts: 220
Threads: 56
Joined: Oct 2011
City: Lompoc CA
#3

12-23-2016, 07:31 PM
More Eico 232 LM317 REPLACEMENT


Attached Files Image(s)
   
Find
Arran
Phorum Expert
*****
Posts: 4,657
Threads: 51
Joined: Sep 2008
City: Sandwick, BC, CA
#4

04-02-2017, 03:21 AM
I have a slightly older Eico where the previous owner rigged up a substitute for the battery by tapping off the filament winding of the transformer, all he used was some diodes, a resistor, and some large value, low voltage, electrolytics. It worked fine for me until I blew out one of the resistors on the Ohm meter section after I accidentally used to to measure some high voltage.
Regards
Arran
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Correct model 84 Ac plug an cord type
From what I read Philco went to using brown rubber power cords in 1936, so cloth was used in the 1935 and earlier models...Arran — 11:25 PM
Correct model 84 Ac plug an cord type
Hi Bruce, I have not worked on an 84, but in general, power cords for almost any radio prior to 1938 was cloth covered...MrFixr55 — 08:34 PM
Restoring Philco 38-14
OK, well, so after staring at the sch again, I realized the problem had to be the #12/12A padder. I put a scope on the o...morzh — 08:15 PM
Correct model 84 Ac plug an cord type
Hello Bruce, I mostly use brown far as my cloth powercords go ! Here is the plug that I have used bakelite Acorn style...radiorich — 08:05 PM
Correct model 84 Ac plug an cord type
Looking for as correct as can find the right Ac plug an the correct colored cloth line. Ive seen many old photos but mos...Bruce — 04:13 PM
Restoring Philco 38-14
Rod Two Y-caps make sense if you use them from L/N to the chassis; this is only makes sense in the transformer radios...morzh — 10:11 AM
Restoring Philco 38-14
Mike, I'm curious about a specific use of he Y cap. Lately I've seen a single cap across the power transformer primary. ...RodB — 09:01 AM
Restoring Philco 38-14
hello morzh , That sounds like a plan ! Sincerely Richardradiorich — 07:45 AM
Restoring Philco 38-14
Richard, It helped some, but I still had the whining when engaging the rear power strip (I did not realize it was fro...morzh — 07:07 AM
Restoring Philco 38-14
Hello morzh, Yes , that dreaded hum in my room where i do alighment I have my cable modem and router plus desktop plus ...radiorich — 11:25 PM

[-]
Who's Online
There are currently 4907 online users. [Complete List]
» 1 Member(s) | 4906 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment