Philco 645 Hum-m-m-m

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Linear Mode

Philco 645 Hum-m-m-m

Winky Dink
Member

Posts: 122
Threads: 22
Joined: Dec 2013
City: Meridian, ID

#34

07-05-2014, 11:04 PM

One thing leads to another. I was checking some of the caps for leaks, shorts, and grounds; and I noticed that I've placed a 630v cap where the voltage is supposed to be 680v. I've run the set for quite a few hours with no problem. I suspect that the actual voltage is higher than 680v, but my multimeter doesn't go above 600v.

[Image: https://lh4.googleusercontent.com/-lNfXa...520645.jpg]

So I have two questions:
1. Should I replace the cap with one of higher voltage rating? The only solution I have on hand is to use two .2uF/630v caps in series. This is in a two-cap bakelite block, and I can squeeze three caps in if I'm really careful about shorts.
2. To check the actual voltage on the (specified) 680v line, can I put the transformer on 60 VAC from the variac and expect 340 volts?

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Philco 645 Hum-m-m-m - by Winky Dink - 04-07-2014, 08:21 PM

RE: Philco 645 Hum-m-m-m - by gregb - 04-07-2014, 08:24 PM

RE: Philco 645 Hum-m-m-m - by Warren - 04-07-2014, 09:05 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-07-2014, 09:23 PM

RE: Philco 645 Hum-m-m-m - by Ron Ramirez - 04-08-2014, 05:31 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-08-2014, 10:10 AM

RE: Philco 645 Hum-m-m-m - by PAradiogeek - 04-08-2014, 11:16 AM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-08-2014, 01:26 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-09-2014, 12:54 AM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-09-2014, 10:58 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-09-2014, 01:45 PM

RE: Philco 645 Hum-m-m Fixed? - by Winky Dink - 04-12-2014, 10:43 AM

RE: Philco 645 Hum-m-m-m - by Steve Davis - 04-12-2014, 11:36 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-12-2014, 11:57 AM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-12-2014, 12:04 PM

RE: Philco 645 Hum-m-m-m - by BrendaAnnD - 04-12-2014, 04:18 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-13-2014, 05:14 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-13-2014, 09:28 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-14-2014, 01:29 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-14-2014, 08:23 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-16-2014, 04:28 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-16-2014, 10:30 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-16-2014, 04:24 PM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-16-2014, 04:43 PM

RE: Philco 645 Hum-m-m-m - by morzh - 04-16-2014, 05:05 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-17-2014, 04:54 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-17-2014, 08:54 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-18-2014, 01:08 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-02-2014, 11:20 PM

RE: Philco 645 Hum-m-m-m - by Arran - 07-03-2014, 12:21 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-03-2014, 01:53 AM

RE: Philco 645 Hum-m-m-m - by morzh - 07-03-2014, 09:45 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-04-2014, 12:37 AM

RE: Philco 645 Yet Another Question - by Winky Dink - 07-05-2014, 11:04 PM

RE: Philco 645 Hum-m-m-m - by morzh - 07-05-2014, 11:09 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-06-2014, 01:57 AM

RE: Philco 645 Hum-m-m-m - by morzh - 07-06-2014, 08:58 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-06-2014, 09:30 AM

RE: Philco 645 Hum-m-m-m - by morzh - 07-06-2014, 10:16 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-07-2014, 08:04 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same. I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting. IF alignment went great, almost all was already spot-on. Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project. O...glyphmon — 11:07 PM
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM
Preliminary work on wife's Silvertone 2014
Safety caps arrived today. Soldered one in and had a successful first power-up. No magic smoke escaped and it tunes in...glyphmon — 09:53 PM

Who's Online
There are currently no members online.

Login
Username:
Password:	Lost Password?
	Remember me