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

Philco 80 jr. rectifier tube hot
#11

Thanks for the tips. I was able to work on it last night for a little while.

Arran, the plates on the 80 never got to a glowing stage but I'll keep that in mind at the next power up.

Bob, thanks for the links to Ron's repair tips. I had seen the modification for the gimmick and the 2meg resistor change. I was going to wait on those until all other work was done. I missed the tip on resistors 9 and 11. That was timely advise. I'm currently in that section and was going to replace #11 the 16k and then noticed the wattage. Back when I first repaired this (22 years ago) I replaced that resistor with a 1 watt carbon composition, rookie mistake. Ron's recommendation was a three watt. I didn't have a three watt so I made a replica dogbone with 3 resistors in parallel. I have a 33k and two 56k 1 watt flameproof resistors inside a tube filled with epoxy. Is my theory correct that 3; 1 watt resistors can handle the same power as a single 3 watt? Actual resistance measurement was within 1% of rating called for. I still need to paint it though. I also missed there fact that cap block #10 was shown twice on the schematic, now it all makes sense. I don't know how many times I tried to trace this out and still missed that.


Attached Files Image(s)
   


Messages In This Thread
Philco 80 jr. rectifier tube hot - by Mike L - 08-28-2016, 04:29 PM
RE: Philco 80 jr. rectifier tube hot - by sam - 08-28-2016, 05:08 PM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 08-30-2016, 08:20 PM
RE: Philco 80 jr. rectifier tube hot - by Arran - 09-02-2016, 04:50 AM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-03-2016, 10:31 AM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-04-2016, 09:28 AM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-11-2016, 03:06 PM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-12-2016, 07:47 PM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-13-2016, 08:25 PM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-22-2016, 07:45 PM
RE: Philco 80 jr. rectifier tube hot - by morzh - 09-22-2016, 10:06 PM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 09-24-2016, 09:20 AM
RE: Philco 80 jr. rectifier tube hot - by morzh - 10-05-2016, 07:59 AM
RE: Philco 80 jr. rectifier tube hot - by Mike L - 10-05-2016, 07:28 PM



Users browsing this thread: 5 Guest(s)
[-]
Recent Posts
RCA T62 is playing.....
Beautiful set.morzh — 09:07 PM
An attempt to remove the Field Coil from a G speaker
Well....here it is. The green stuff. Unfortunately, probably penetrates deep. I opened the top layer and saw that: ...morzh — 08:58 PM
Philco 91 Restore Code ??
:clap: :clap: :clap: :clap: Really nice workmanship!!! Top of the chassis looks great. Sorry about the long winded e...MrFixr55 — 08:09 PM
Philco 40-120C Restoration
Thank you for your reply. I will check voltages on the other tubes, look at resistor 23 and cap 25, etc. If all else fai...bluecap — 07:58 PM
RCA T62 is playing.....
Nice looking set great save. DavidDavid — 07:48 PM
Philco 89 indicator light.
Hello Jim, I have done several 89s. The trick is to move the drum in or out on it's shaft. You will need to loosen a set...dconant — 07:36 PM
An attempt to remove the Field Coil from a G speaker
MrFixr Yes, it is my plan to go with 45rpm spider if I go that far. No, the pole was not left-handed as I unscrewed ...morzh — 07:14 PM
Philco 40-120C Restoration
Change the tube. Check the tube's bias network. Are any other tubes experience the drop or just this?` Is resistor 23 OK...morzh — 07:09 PM
Philco 89 indicator light.
I forgot how the pointer is formed: could you show the way it is formed and how you tried to change it?morzh — 07:01 PM
An attempt to remove the Field Coil from a G speaker
Was that pole piece left handed ? Since the metal "spider" is toast, wonder if you can either get the "4...MrFixr55 — 06:54 PM

[-]
Who's Online
There are currently 7453 online users. [Complete List]
» 3 Member(s) | 7450 Guest(s)
AvatarAvatarAvatar

>