1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 71 abnormal filament voltages-low volume
dmblackburn
Junior Member
**
Posts: 23
Threads: 3
Joined: Feb 2021
City: Durham State, Province, Country: NC
#6

08-06-2024, 04:48 PM
Update : i decided to take this radio off the isolation-dim bulb-variac setup and plug into the wall. Previously my variac was set to 115 volts. My wall voltage is 120 volts.
What a surprise- now I'm getting full volume on all the local stations. Sometimes the volume decreases then increases. I have also noticed in doing this, I am getting pretty severe static when the HVAC and HVAC fan are running. 

I keep monitoring the ohms on the 13K resistor (PN59) with the set off and now the value is up (approximately 14-14.5 K)
Find
« Next Oldest | Next Newest »


Messages In This Thread
RE: Philco 71 abnormal filament voltages-low volume - by dmblackburn - 08-06-2024, 04:48 PM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM
Model 28L
For 28 you will probably need to buy a Hammond 125CSE. Or any of the series of the power you need, with SE suffix. Then ...morzh — 02:09 PM
37-60 revision 6
I am restoring a Philco 37-60 and it shows run 6 they removed the ground from G3 of the 6K7G and put the G3 to -2.5v for...bobbyd1200 — 01:01 PM
Shadow Meter Bulb
Mike is correct on the bulb connection, two separate circuits. I found that by rotating the bulb and sliding it forward ...RodB — 12:19 PM

[-]
Who's Online
There are currently 6914 online users. [Complete List]
» 1 Member(s) | 6913 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration