Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Revisiting my 7S363
#5

After reading your responses and some more thought, I decided to go the route Codefox suggested. I wrote down a parts list from the schematic, and looked at it. Something didn't seem right to me... Before you guys start laughing, bear in mind that I am in my early 30s and all my knowledge is based on Navy training for modern components.
Looking closely at the list, I realized I didn't have a single value below 1 Megohm!? I thought "That can't be right, why would there be 470 Megohm resistors in this thing?" A little Google-Fu later, and I now know that the annotation of M Ohm in the old schematics is notation for thousand! No wonder everything looked funky to me!
Armed with my new knowledge, I will replace all the resistors in the set. I didn't trust any of the paper caps, why would I trust old carbon resistors.

This brings up a new question. The candohm resistor has one 220 ohm section reading way too high. I have 10W power resistors to make a new one. Is 10W enough dissipation or should I source higher wattage? Is 10W too high?


Messages In This Thread
Revisiting my 7S363 - by LedHed - 06-15-2012, 11:28 PM
RE: Revisiting my 7S363 - by rghines1 - 06-16-2012, 11:22 AM
RE: Revisiting my 7S363 - by morzh - 06-16-2012, 12:41 PM
RE: Revisiting my 7S363 - by codefox1 - 06-16-2012, 02:46 PM
RE: Revisiting my 7S363 - by LedHed - 06-16-2012, 07:57 PM
RE: Revisiting my 7S363 - by morzh - 06-16-2012, 08:02 PM
RE: Revisiting my 7S363 - by TA Forbes - 06-16-2012, 10:45 PM
RE: Revisiting my 7S363 - by codefox1 - 06-17-2012, 03:19 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM
IF can wire size and Rubber mounts?
A pair of wire strippers can give you an idea of what the existing gauge of the wire leads are in the IF can, I think it...Arran — 06:07 AM
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM
Philco Predicta Siesta picture over time getting dimmer
I found that the wire insulation was burnt.  The fly back needs corona dope! Why would someone put that there?Platinumblonde36 — 01:09 AM
Philco Predicta Siesta picture over time getting dimmer
This is what it looked like beforePlatinumblonde36 — 01:01 AM
Philco Predicta Siesta picture over time getting dimmer
Platinumblonde36 — 12:58 AM
Philco Predicta Siesta picture over time getting dimmer
Platinumblonde36 — 12:57 AM
Philco Predicta Siesta picture over time getting dimmer
I'm finding some strange things in my set and for the most part it's also original, so I need to start going over everyt...Platinumblonde36 — 12:55 AM

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

>