Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Philco 38-2 Low Volume
#11

Mr FixIT, when I get ready to restore a radio I do just enough to verify it works or get it working. So if it didn't have good volume I would not know that. I then set about doing the restore. The set did not work when I got it. I have done a partial alignment up to the point of doing the adjustment for the 2XC compensator. I can't go further as I don't have a dial yet. Waiting on Radio Daze. I have a generator. Please see last page of the link provided below for 2XC compensator and alignment instructions. I have the IF cans with the three compensators on each on the sides. Both versions of the schematic use the same tubes. The set is pretty sensitive picking up a lot of stations in my area.

RodB, if you look at the last page of this schematic https://philcoradio.com/library/download...l.%202.pdf you will see the 99K plate resistor. I tacked in another 100K in parallel and it made no difference, the voltage on the plate of 2nd audio is still 90 volts. Makes me think the tube is not drawing current.

The 1st audio plate is low too at 80 volts vs 100. There is a 70K (37X) resistor feeding both 1st and 2nd audio plates. If I short out that resistor 1st audio goes up to 120 and 2nd audio goes up to 125. There was a slight increase in volume.

I touched the antenna to the grid of the RF amp and the volume went down noticeably. I don't know what tube is the converter.


Messages In This Thread
Philco 38-2 Low Volume - by dconant - 11-09-2024, 02:27 PM
RE: Philco 38-2 Low Volume - by morzh - 11-09-2024, 03:15 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-09-2024, 10:27 PM
RE: Philco 38-2 Low Volume - by RodB - 11-10-2024, 11:44 AM
RE: Philco 38-2 Low Volume - by dconant - 11-10-2024, 01:23 PM
RE: Philco 38-2 Low Volume - by dconant - 11-10-2024, 02:39 PM
RE: Philco 38-2 Low Volume - by morzh - 11-10-2024, 03:25 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-10-2024, 06:31 PM
RE: Philco 38-2 Low Volume - by RodB - 11-10-2024, 06:52 PM
RE: Philco 38-2 Low Volume - by morzh - 11-10-2024, 07:16 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 12:05 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 01:17 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 02:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 02:14 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 02:36 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 03:50 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 04:58 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 05:20 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 05:38 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 06:23 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 11:15 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 08:51 AM
RE: Philco 38-2 Low Volume - by RodB - 11-12-2024, 10:53 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:02 AM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 11:16 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:22 AM
RE: Philco 38-2 Low Volume - by RodB - 11-12-2024, 11:43 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:52 AM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 11:57 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 12:02 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 12:08 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 12:27 PM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 12:42 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 02:07 PM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 02:25 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 02:57 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 02:57 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 04:24 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 04:50 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 05:21 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 06:04 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:08 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 04:37 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:42 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 04:52 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:56 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 05:22 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 06:03 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-13-2024, 06:51 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-13-2024, 07:00 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 07:28 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 08:25 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 08:21 AM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 03:57 PM
RE: Philco 38-2 Low Volume - by morzh - 11-14-2024, 04:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 04:28 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 07:35 PM
RE: Philco 38-2 Low Volume - by morzh - 11-14-2024, 07:39 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 09:57 AM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 10:02 AM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 11:09 AM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 11:47 AM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 11:55 AM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 12:44 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 12:50 PM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 01:42 PM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 03:24 PM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 04:19 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 05:36 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-15-2024, 07:31 PM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 08:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-16-2024, 08:36 AM
RE: Philco 38-2 Low Volume - by radiorich - 11-16-2024, 12:12 PM
RE: Philco 38-2 Low Volume - by dconant - 11-17-2024, 10:55 AM
RE: Philco 38-2 Low Volume - by dconant - 11-21-2024, 11:03 AM
RE: Philco 38-2 Low Volume - by dconant - 12-04-2024, 08:41 AM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind, even if it's a U.S.N power supply. I have a book somewhere abo...Arran — 02:56 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
hello david, I have a similar generator in my collection that features a cast iron, single-cylinder Briggs & Stratt...radiorich — 01:00 AM
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM

[-]
Who's Online
There are currently 1667 online users. [Complete List]
» 1 Member(s) | 1666 Guest(s)
Avatar

>