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

42-350 good volume & recept with pushbuttons tuner so so
#5

Ok I re-alined, rechecked all voltages shown in schematic they are all within 2 to 3 volts. Looks like only plate voltages shown. Not knowing what to do next I injected a weak audio signal into the grid of 7B5 and got a good strong return from the speaker.
I'm a newbie so please bear with me. I'm thinking now I have a RF or reception problem. Still have better sound/reception on push button than manual tuning. Of course I have both set for the same local station. I checked all Band switch connection that I could find on drawing for position 2 broadcast they all showed continuity in the ohms range. While I was doing this I discovered if I touched the #1 lead of (10) the broadcast aerial trans. reception/ volume increases 100%. But is still lower in manual that push button tune. Push button sounds almost normal with a length of wire attached to this lead. By the way I can only receive 2 stations on SW and they are barely audible. I don't usually give up easy, but there has to be less aggravating hobbies Icon_lol All suggestion and comments welcome.
Thanks


Messages In This Thread



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
American Bosch Model 802 auto radio
Hello again;   I found a model 838 car radio on Nostalgia Air under United American Bosch, http://www.nostalgiaair.org/...Arran — 09:32 PM
New Philco Repair Bench
Morzh is correct. The repair bench on our website is an archived image of chuck’s original site. He no longer provides s...klondike98 — 05:32 PM
Made mistake & did not label connection
Excellent information. It is all starting to come together now and your explanation really helped since I noticed that ...georgetownjohn — 04:39 PM
Made mistake & did not label connection
Hi John, I don't have this radio, but I can supply some info: Based on your pic, pins 7,8 and 1 are used together, go...MrFixr55 — 02:02 PM
New Philco Repair Bench
As far as I know, the Repairbench does not work, and has not been working in a while. Chuck (we had that campaign looki...morzh — 01:33 PM
Radio city products 664 schematic request
Need a schematic or manual for the 664. The 663 may be similar.daveone23 — 12:38 PM
New Philco Repair Bench
Thanks Gary.dconant — 12:16 PM
New Philco Repair Bench
I tried accessing the site through our library and got the same response. It's reported to our tech gurus. GaryGarySP — 11:50 AM
New Philco Repair Bench
I am sure this is the archive, and not the Chuck's site.morzh — 09:50 PM
Made mistake & did not label connection
It's not like we are good friends with that wire and can tell it from other ptetty identical looking wires. Why'n't you...morzh — 09:49 PM

[-]
Who's Online
There are currently 3749 online users. [Complete List]
» 1 Member(s) | 3748 Guest(s)
Avatar

>