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 89 Bakelite Block not in schematics
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

12-18-2005, 10:35 PM
Hi Kenny

Sounds like you're going by Service Bulletin 146B, which is for Model 89, Code 123 - BUT with the Type 77 tube as det-osc. instead of Type 36. This Bulletin does call for 3615-XG, which is NOT what you want if your set uses a Type 36 tube. 8174-B is correct in your set, which is 700 pF and .09 (not .05) uF.

700 pF and 0.1 uF is a correct replacement.

Don't use another 15K cathode resistor! Use a 10K or, if necessary, 7.5K.

And be advised the oscillator coil may very well need to be baked (yes, literally baked) and rewound to make the set work. See the "89 from H**l" thread here in the Phorum for more details.
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Philco 89 Bakelite Block not in schematics - by Guest - 12-18-2005, 10:09 PM
[No subject] - by Ron Ramirez - 12-18-2005, 10:35 PM
[No subject] - by Guest - 12-18-2005, 11:05 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

[-]
Who's Online
There are currently 2177 online users. [Complete List]
» 2 Member(s) | 2175 Guest(s)
AvatarAvatar

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