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

40-180 Voltage High
#14

I have a couple of dental inspection mirrors (You know, the ones the dentist uses to see around corners,) so if there is room, sometimes you can read the other side that way.

And it is good practice to try to have replacement components face "up" so you or the next person who works on the set can read them.

One more thing, a mica with the "dreaded mica disease" may check out ok on digital multimeters, but applying a little voltage, like my treasured Eico 950B RC Bridge does will reveal the truth. The eye will not remain open after a few volts. This test is help in the diagnosis of the set, (the crackeling and fading caused by these little monsters.)

Of course you have to remove one end from the circuit to perform the test, and at that point I usually toss it anyway and put in a new one. So most little sets can get a whole new population of caps and resistors for less than $10. The resistors and capacitors almost always read high, the electrolytics are always dangerously degraded, and all paper caps are leaky. About all I leave untouched are the controls (after cleaning) and wirewould resistors.

Good luck on your project!


Messages In This Thread
40-180 Voltage High - by Bruce C - 03-29-2010, 05:20 PM
Re: 40-180 Voltage High - by DeckApe - 03-30-2010, 09:36 AM
Re: 40-180 Voltage High - by Bruce C - 03-30-2010, 10:48 AM
Re: 40-180 Voltage High - by rghines1 - 03-30-2010, 05:48 PM
Re: 40-180 Voltage High - by Bruce C - 03-30-2010, 07:18 PM
Re: 40-180 Voltage High - by rghines1 - 03-31-2010, 04:58 PM
Re: 40-180 Voltage High - by Bruce C - 03-31-2010, 10:32 PM
Re: 40-180 Voltage High - by Bruce C - 04-04-2010, 07:16 PM
Re: 40-180 Voltage High - by rghines1 - 04-05-2010, 08:47 AM
Re: 40-180 Voltage High - by Bruce C - 04-05-2010, 07:34 PM
Re: 40-180 Voltage High - by exray - 04-05-2010, 10:40 PM
Re: 40-180 Voltage High - by Raleigh - 04-05-2010, 10:59 PM
Re: 40-180 Voltage High - by exray - 04-05-2010, 11:26 PM
Re: 40-180 Voltage High - by codefox1 - 04-06-2010, 02:12 PM
Re: 40-180 Voltage High - by Bruce C - 04-06-2010, 05:08 PM
Re: 40-180 Voltage High - by Bruce C - 04-20-2010, 05:47 PM
Re: 40-180 Voltage High - by Bruce C - 04-26-2010, 05:36 PM
Re: 40-180 Voltage High - by Ron Ramirez - 04-26-2010, 05:51 PM
Re: 40-180 Voltage High - by denver - 04-26-2010, 07:28 PM
Re: 40-180 Voltage High - by Bruce C - 04-30-2010, 01:35 PM
Re: 40-180 Voltage High - by exray - 05-01-2010, 02:36 AM
Re: 40-180 Voltage High - by Bruce C - 05-07-2010, 11:03 AM
Re: 40-180 Voltage High - by codefox1 - 05-08-2010, 10:45 AM
Re: 40-180 Voltage High - by Raleigh - 05-12-2010, 02:09 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 08:06 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 08:06 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 08:06 PM



Users browsing this thread: 5 Guest(s)
[-]
Recent Posts
An attempt to remove the Field Coil from a G speaker
Gary I in fact did, on a 38-14, I think, where I had a speaker with the dead coil. Well...it kinda worked. Kinda, be...morzh — 10:38 PM
An attempt to remove the Field Coil from a G speaker
Mike, what ever happened to that plan you had to try using a rare earth magnet to magnetize the pole? This looks like a...GarySP — 10:25 PM
RCA T62 is playing.....
Beautiful set.morzh — 09:07 PM
An attempt to remove the Field Coil from a G speaker
Well....here it is. The green stuff. Unfortunately, probably penetrates deep. I opened the top layer and saw that: ...morzh — 08:58 PM
Philco 91 Restore Code ??
:clap: :clap: :clap: :clap: Really nice workmanship!!! Top of the chassis looks great. Sorry about the long winded e...MrFixr55 — 08:09 PM
Philco 40-120C Restoration
Thank you for your reply. I will check voltages on the other tubes, look at resistor 23 and cap 25, etc. If all else fai...bluecap — 07:58 PM
RCA T62 is playing.....
Nice looking set great save. DavidDavid — 07:48 PM
Philco 89 indicator light.
Hello Jim, I have done several 89s. The trick is to move the drum in or out on it's shaft. You will need to loosen a set...dconant — 07:36 PM
An attempt to remove the Field Coil from a G speaker
MrFixr Yes, it is my plan to go with 45rpm spider if I go that far. No, the pole was not left-handed as I unscrewed ...morzh — 07:14 PM
Philco 40-120C Restoration
Change the tube. Check the tube's bias network. Are any other tubes experience the drop or just this?` Is resistor 23 OK...morzh — 07:09 PM

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

>