Posts: 1,824
Threads: 114
Joined: Jul 2014
City: Sneedville, TN
It is very possible that someone mixed up the tubes if they didn't look at the diagram for where they go. This should be on a label on the radio itself. If it is missing, it also appears on the schematic page Terry sent you a link to on page one of this thread. I suggest you print out that pdf file. Also, remember, from the underside things are upside down, so be careful what socket is what. Looking at the schematic, it looks like the 3.3 meg resistor provides grid bias for the 7C6 tube, which is pin 3. Pin 3 also should have a .01mfd condense that goes to the wiper of the volume control pot. There is also a 2.2 meg resistor shown between pins 5 and 6. There is a 470K resistor on the plate of the 7C6 which generates the signal that passes through a .01mfd condenser to the grid of the audio amp tube.
Users browsing this thread: 20 Guest(s)
|
|
Recent Posts
|
|
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 |
|
54C Complete Teardown/Rebuild
|
| Hello Roy,
here is this one
sincerely Richardradiorich — 12:45 AM |
|
Who's Online
|
| There are currently no members online. |
|

|