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 90 restoration
#1

Thanks to Chuck S. I got the service literature for the 90 yesterday. Today, I finished the recap and changed all out of tolerance resistors, save one, a 240K ~3 watt. I don't have any of those in my current inventory. I found some doozies, too. Out of the three 240K resistors in the audio circuit, two were well over 700K, one was virtually open. The two 490K resistors in the detector circuit were both well over 4M!


Attached Files Image(s)
   
#2

Glad to help Brenda. S-l-o-w mail it seems.

Don't for get to re-stuff that tone control. Looks original in the photo.

Icon_smile

Chuck
#3

Well that's why I started the Recarb and Recap School of Everlasting Rejuvination. Few followers so far.
#4

This is the same tone control (or similar) we have in 18.
Not only it has rubber wires, which cracked, so I had to splice them, it is also potted.
I actually left it alone. Did not have it in me. This is one single thing in the whole 18 that I did not restuff.
#5

The higher the value the higher they drift!!!
Terry
ps WHAT CUTE LITTLE RESISTORS YOU HAVE THERE!!!
#6

All flameproof, all the same or higher power rating than the originals. Icon_smile
#7

It is amazing but today's 1W resistor is about 1/4 size of then 1W resistor.
What bad is that sometimes the leads are not long enough to span the old resistor and so the old one gets cut and then the new one gets soldered to them.
#8

Yes, it would be nice if the powers that be would lengthen the leads about an inch. It's not like it would make a substantial difference in their profit margins.
#9

It could. It's copper. Copper. Copper is expensive. I am sure one lead of a power through-hole resistor is worth more than a whole 1206 SMT chip resistor.
#10

Hi All;
Brenda Ann, You could use an 1206 SMT and make the leads as Long as You like.. Soldering a lead to each side of the unit..
THANK YOU Marty




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Rogers Majestic R-646
Transformers rewind? It's very easy! If you don't have round eyes  8-) Vlad95 — 01:55 PM
Help with Supreme 599
I found a broken wire from the end og the 300 ohm line adjust to the transforner but i dont think its needed. The transf...daveone23 — 11:43 AM
Philco 38-10 Tuning Condenser
RodB I have been using pure Vaseline for a long time for thick lubrication of home radio devices. The main reason is t...Vlad95 — 10:58 AM
Philco 38-10 Tuning Condenser
Vlad, your comment about Vaseline brought a thought. Does anyone know the long term affect on using silicon grease on t...RodB — 10:34 AM
Philco 42-345 Restoration/Repair
Arran, didn't notice the specifics for the caps. What's the code going to get me? I'm working on restoring a Philco 50-9...RodB — 10:26 AM
Philco 38-10 Tuning Condenser
I managed to get the gears lined up and the springs back in. Much easier than it thought. Putting a thin wire down insid...dconant — 09:52 AM
Philco 42-345 Restoration/Repair
Rod, Mrfixr55 and everyone else thank you very much for all your help with this radio thus far. Today will be more testi...osanders0311 — 09:26 AM
Philco 38-10 Tuning Condenser
Thanks for the reply Vlad95. I can't even see the balls let along try to remove them. The grounding forks are going to p...dconant — 08:03 AM
1949 Motorola 5A9M
Vlad; Yes it's very similar, Motorola obviously wanted to get the most use they could out of the dyes used to stamp o...Arran — 11:18 PM
Philco 42-345 Restoration/Repair
Rod; I that 27 pf 1 kv capacitor you found a C0G ceramic cap or just a regular ceramic cap? A different topic but I t...Arran — 11:16 PM

[-]
Who's Online
There are currently 683 online users. [Complete List]
» 2 Member(s) | 681 Guest(s)
AvatarAvatar

>