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

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

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Heath-Zenith (Heathkit) Frequency Counter Model SM-2420
captainclock1988
Senior Member
****
Posts: 325
Threads: 34
Joined: Dec 2019
City: Elkhart State, Province, Country: Indiana
#10

05-06-2020, 07:10 PM
Quote:If you look at the schematic for the SG-8, there is a connection in the tank circuit of the RF OSC that has a common connection with the AF mod output tube, 6C4.  I'd be looking for a cold solder joint at that connection, or an error.


Hey Kim, I think I found the problem, take a look at the picture below and tell me what you think.

   
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
RE: Heath-Zenith (Heathkit) Frequency Counter Model SM-2420 - by captainclock1988 - 05-06-2020, 07:10 PM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
PT-6 finished!!
Actually the Loctal tube series, with number beginning with "14" are 12.6 volt tubes, at 150 ma, I'm not sure ...Arran — 02:14 AM
philco predicta
The model is the holiday without UHF It has no sound and I don't have an oscilloscope or signal generator.cgl18 — 08:51 PM
Philco model 38 code 121 not receiving signal.
I will definitely check my lead length and wire dressing. Thanks for the ideas.Stormlord5500 — 08:06 PM
Philco model 38 code 121 not receiving signal.
Do make sure that you twist the 3 wires from the chassis to the transformer, and dress away from tubes, especially audio...MrFixr55 — 07:38 PM
Philco model 38 code 121 not receiving signal.
The cone unfortunately got damaged when I removed it. The glue that held the cone to the basket was sloppily applied and...Stormlord5500 — 07:12 PM
Philco model 38 code 121 not receiving signal.
So what was wrong with the original speaker? Was the cone damaged? Unless it's totally hopeless I would put it aside as ...Arran — 05:31 PM
My collection presentation
There is an article on my site that introduces the first portable radios in my collection. I have only provided a link t...Vlad95 — 01:17 PM
Electrolytic restuffing/internals
Bridkarl This specific cap you have is the easiset type to restuff. I usually cut it at the upper border of the depr...morzh — 11:35 AM
philco predicta
Hi CGL18, First off, welcome to the Philco Phorum. I have not worked on a TV for a while but here are some givens: ...MrFixr55 — 08:22 AM
Another amp build - here I go again!
Sweet! I actually have a Dynaco Mark 4 that I had been running with 6L6s with no mods. Seemed to my 14-year-old head a...MrFixr55 — 12:57 AM

[-]
Who's Online
There are currently no members online.

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