1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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
Philco Model 70 -- Help
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

10-02-2008, 06:33 PM
diamondust Wrote:It now has very good sensitivity and selectivity but the volume could be much better. Seems that when I touch the volume control , the R.F.grid or the ant. clip, the volume almost doubles.

Do you have an antenna connected to the set? It needs at least 25 feet of wire; longer is better.

diamondust Wrote:When I test voltages the screen grid volts are about one and a half times what they should be -- the control grids are about five times what they should be!! -- Cathode volts are about one and a half times . The even stranger thing is that the " 24 " second detector plate has over the double ( 230 v. ) what it should be!! The other plates are only sl. high.

Did you check all resistor values? What is your line voltage?
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Philco Model 70 -- Help - by Guest - 10-02-2008, 05:51 PM
Re: Philco Model 70 -- Help - by Ron Ramirez - 10-02-2008, 06:33 PM
Re: Philco Model 70 -- Help - by Chuck Schwark - 10-03-2008, 09:38 AM
Re: Philco Model 70 -- Help - by Guest - 10-03-2008, 12:23 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM
Part numbers to model cross
Jim, We have this index put together by Dale Cook but I don't think that is quite what you are looking for. The Parts...klondike98 — 09:37 PM
Philco Model 38-7: what caps & resistors do fail typically?
Yep the dim bulb test is OK but I'd definitely replace all those electrolytics before I did it. Since those #47 conden...klondike98 — 09:18 PM
Philco 42-345 Restoration/Repair
The resistor is a 2.2 Meg, it was the last one I hadn't replaced. The broadcast is coming in after replacing it.osanders0311 — 09:09 PM
Philco 42-345 Restoration/Repair
What does the resistor measure? I think it should be 3.3 Meg. If the oscillator coil has continuity and the resistanc...RodB — 09:03 PM
Philco Model 38-7: what caps & resistors do fail typically?
Good idea to check the coils... then I'll get hold of an incadescent light bulb and see what happens when the unit is sw...Musaeum — 08:49 PM
Philco 42-345 Restoration/Repair
I have that same set, ain't too much shortwave I like anyway.....it is a good AM DX set. PaulPaul Philco322 — 08:32 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum, Martin! Open a new thread in Philco Electronic Restoration when you begin working on your 38-7. ...GarySP — 08:28 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum! :wave: Here's the schematic for that radio from our digital library: Something to do bef...klondike98 — 08:05 PM

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

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration