1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment

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
Starting on the HP200CD oscilaltor
Mondial
Phorum Expert
*****
Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
#21

03-09-2014, 04:08 PM
Did you change the two paper coupling caps? These leak badly when they get warm and throw off the bias on the output tubes.

These are the two plastic molded caps with the colored stripes. They are invariably bad as any other 60 year old paper cap.
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Starting on the HP200CD oscilaltor - by morzh - 02-23-2014, 10:23 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-23-2014, 11:28 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-24-2014, 12:10 AM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-24-2014, 10:20 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-24-2014, 10:27 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-26-2014, 12:15 AM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-26-2014, 11:59 AM
RE: Starting on the HP200CD oscilaltor - by morzh - 02-26-2014, 12:04 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-01-2014, 11:14 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-08-2014, 10:20 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-08-2014, 10:24 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-09-2014, 11:59 AM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-09-2014, 03:49 PM
RE: Starting on the HP200CD oscilaltor - by Mondial - 03-09-2014, 04:08 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-09-2014, 04:33 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-09-2014, 05:36 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-09-2014, 08:04 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-14-2014, 07:59 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-14-2014, 11:07 PM
RE: Starting on the HP200CD oscilaltor - by morzh - 03-15-2014, 08:46 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
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

[-]
Who's Online
There are currently 1588 online users. [Complete List]
» 2 Member(s) | 1586 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment