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

Power supply design needed from master designer Terry
#8

Yes, I got lucky and found a P-T292 transformer so that's going to be a big help. So just use the 5K pot and dial it down to 6V?

And just to verify my brain is still functioning in 2022:

A - & B - are both to chassis ground?

A + to off / on switch?

B + to the positive side of the 12 MFD e-cap (C31)?

That should work just fine with the vibrator supply disconnected (I'll probably leave the box bolted on top of the chassis for "show") and will work with the existing PS design from 2017.

Tonight I freed up the tuning mechanism which was froze tight. A few well placed small squirts of Kroil did the trick.

I also took out the 5 bias cells and checked them for voltage. I got nothing on them. So I boiled some water, and dropped them in. Yes, they bubbled like crazy for a few seconds. I left them cool in the water a bit, took them out and set them on a paper towel until the water disappeared inside. Then rechecked them. Each now measured .87 v. So it did something. Not quite the 1.5 v I was expecting but better than nothing.

Greg V.
West Bend, WI
Member WARCI.org


Messages In This Thread
RE: Power supply design needed from master designer Terry - by NostalgiaRadioTime - 01-03-2022, 12:56 AM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco newbie with P-1891-WA console questions
Well, I've been stumped at trying to get the first of 11 electrolytic capacitors. I got a schematic and have a list of t...Jeffcon — 07:54 PM
Model 80 Antenna Issue?
Thanks Gary and Rod.  I also found an article in the Philco Repair Bench under Service Hints and Tips, about installi...Hamilton — 12:32 PM
Model 80 Antenna Issue?
Hello Hamilton, here is a little information found in our Philco Radio Library at the bottom of the Home page. Hope it ...GarySP — 11:28 AM
Model 80 Antenna Issue?
I did as you suggested and touching the middle of the volume control did nothing so the coil has to be rewound. Any idea...Hamilton — 10:19 AM
1949 Motorola 5A9M
This would be the second portable in the "other radios" forum where I have a similar one in my collection. I h...Arran — 12:41 AM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hi PittsburgTost. The record changer looks like a Garrard or BSR (Likely Garrard). The spindles just pull out and pu...MrFixr55 — 11:57 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hello PittsburghToast , Welcome aboard and it looks like gary may have something for you ! now if I dig through my se...radiorich — 11:35 PM
Model 80 Antenna Issue?
You are kind of on the right path. You can touch the grid cap of the Detector/Oscillator 36 tube. I'm expecting a respon...RodB — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum, PittsburghToast!  I found an old thread that my interest you regarding the quality and worth of P...GarySP — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum! :wave: We do not have anything on that unit in our digital library. There is a Sam's Photof...klondike98 — 08:47 PM

[-]
Who's Online
There are currently 1084 online users. [Complete List]
» 3 Member(s) | 1081 Guest(s)
AvatarAvatarAvatar

>