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

Thread Closed

philco 48-1270 burning out r315/ updates
#2

(04-11-2012, 06:50 PM)magicclocks Wrote:  I just got a philco console I stated above and when I first got it it had no sound at all. Total silence just wanted to see what I was looking at. I did the preliminary tests that are written in the schematic info and I was getting low volts on the first few test points. Only 200 volts instead of 250 from the rectifier ,a 5u4g. so I went ahead and replaced all the electrolytics and any other resistors it said could be bad . I also found two resistors blown. The r 315 which is listed as a screen dropping resistor 3300 ohm was burned right in half and the r 313 82,000 ohm was reading 1.5 megs after I replace them both. And I restored power the 3300 plohm resistor burned in half in about 5 seconds. I have ordered a new rectifier tube and two new 6v6 power tubes any other advice as to what could cause this I know it's a lot to think about , could it also be a bad 7h7 tube , or should I just start checking and replacing all caps attached to the resistors

http://www.nostalgiaair.org/PagesByModel...013617.pdf

Can't read that crummy schematic. Replace the caps around it and see what happens
Terry



Messages In This Thread
RE: philco 48-1270 burning out r315 - by 7estatdef - 04-11-2012, 07:57 PM
RE: philco 48-1270 burning out r315 - by John R - 04-12-2012, 12:47 PM
RE: philco 48-1270 burning out r315 - by John R - 04-13-2012, 12:37 AM
RE: philco 48-1270 burning out r315 - by codefox1 - 04-13-2012, 02:16 AM
RE: philco 48-1270 burning out r315 - by rghines1 - 04-14-2012, 09:06 AM
RE: philco 48-1270 burning out r315 - by Arran - 04-14-2012, 11:38 PM



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 1956 online users. [Complete List]
» 1 Member(s) | 1955 Guest(s)
Avatar

>