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

Thread Closed

Tubes for Philco 80 Jr.
#7

The 80 acts like it is shorted?  If you see flashing inside the 80, shut it off immediately!  It is likely that there is a short loading the rectifier down.  The most common cause is shorted electrolytic capacitors.  The originals of this vintage almost never survive and will short.

All caps on antique radios should be replaced with new, modern caps, but replacing the electrolytic caps used as filters in the power supply is an absolute must, especially in radios from the 1930s.

It's a shame if the 42 is too weak to use.  Globe 42s are way cool in my book.  They are the genesis of what became the 6F6, a common pentode (non-beam power) audio output tube.  ST type 42s are common, but globe 42s are rather rare and a good one will command some money.  Save your old one for display.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
Tubes for Philco 80 Jr. - by Jim Dutridge - 06-08-2024, 01:30 PM
RE: Tubes for Philco 80 Jr. - by MrFixr55 - 06-08-2024, 06:21 PM
RE: Tubes for Philco 80 Jr. - by Hawkeye - 06-08-2024, 09:36 PM
RE: Tubes for Philco 80 Jr. - by Jim Dutridge - 06-10-2024, 09:35 AM
RE: Tubes for Philco 80 Jr. - by David - 06-10-2024, 03:28 PM
RE: Tubes for Philco 80 Jr. - by Steve Davis - 06-10-2024, 10:48 PM
RE: Tubes for Philco 80 Jr. - by MrFixr55 - 06-11-2024, 06:01 AM
RE: Tubes for Philco 80 Jr. - by David - 06-11-2024, 01:18 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM

[-]
Who's Online
There are currently 2196 online users. [Complete List]
» 2 Member(s) | 2194 Guest(s)
AvatarAvatar

>