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 - another error?
#1

Hi forum,
I am close to finished the 90. I found a strange thing that is either an error which I have not heard about or a complete coincidence. Part number 1 (10 Kohms resistor) reads 10 Ohms. It is an original dogbone. Should this be 10K or 10 ohms...or is this a possible error? After hearing about the schematic mistakes, nothing would surprise me. Thanks fellas- I'll put a pic of her up once she's singing-
BDI
#2

BDI.

A stupid question - did you unsolder your #1 or you are buzzing it still soldered across the antenna coil?

(btw which 90)?
#3

not that stupid...remember i'm still learning. It is connected to the coil, but i'm reading it at the ends of the resistor, bypassing the coil. Will the coil affect the reading?
#4

Sorry, but what you just said makes no electrical sense.
Simple question has been asked: Have you unsoldered the resistor or is it in-circuit?

If it is, you are reading the coil and not the resistor.
#5

Single 47...
#6

It Is In Circuit... however I'm not reading both ends of the coil. I'm reading both ends of the resistor, but it is soldered in place
#7

OK.

I am not getting through, do I....

(I also asked what version of 90 it is).

You need to learn your basics.

Here is one of the basics.

If you have a coil, like an antenna coil, it will have resistance of a few Ohms.
If you parallel two resistances, the smaller one wins.

By checking your resistor in-circuit you are paraleling a high 10K resistor with low 10 Ohms or so coil.

The coil wins.
#8

Never Thought Of That Possibility. I AM Glad You Guys Are Here To Keep Me In Line...Thanks Morz- ((... Its A Single 47))
#9

Well, the good news is, your antenna coil is OK. At least this one.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM
Just got a 49-1613 need to know...everything!
I just found your post. I have this exact same model, and have had it since 1985 when I was 15 years old! I performed a ...MuzzcoVW — 09:11 AM
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM
B&K 1077B no video
Hello Tim, I have that exact unit in my shop too plus a Sencore unit there are times I like one or other !!. Sincerely...radiorich — 11:07 PM
RCA 15X
Everthing goes at once, maybe it's the cold weather, I have had 2 dial strings break and no my little RCA is having dial...Paul Philco322 — 10:26 PM
Philco 91 Schematic
Hi Dan, I can't explain this specific resistor but I have seen the use of a switch to apply B+ voltage to screen gri...RodB — 09:36 PM
6TPZ and 5TPO Radio Help
I suspect it's been repaired before. And I suspect whoever repaired it, wanted to re-use old transistors' pin stubs in o...morzh — 09:24 PM

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

>