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

41-226 Restore And The XXD Tube
#1

I am finishing up the electronic restoration of a decent looking 41-226. Lots of tight spaces and rubber wire. The recap went well, except I was plagued with motorboating at the high end of the B/C band.

Looking at the sets construction, I wondered how it ever worked. Open IF transformer under the chassis, and wires running all over the place. I swapped out the tubes one at a time without success. The set came with a 14AF7 in place of the XXD. I tried another 14AF7, with no luck.

Finally I found a real XXD tube, and that resolved the issue. I really don’t know what the difference is between the two tubes, but obviously there’s something. Looking up this tube seems to always list 14AF7. I found a post on ARF with the same issue with a similar radio, and there too, an XXD fixed it.

ARF Post Same Issue

I’m glad this radio is going, and it really pulls in the stations. Nice sounding radio with plenty of volume.

Just thought I’d share this with you in case it comes up with someone else. Beware of substitutes!

Tony

“People may not remember how fast you did a job, but they will remember how well you did it”




Users browsing this thread:
[-]
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.

>