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

Thread Closed
Thread Rating:
  • 1 Vote(s) - 4 Average
  • 1
  • 2
  • 3
  • 4
  • 5

testing equipment
#16

OK I take it, it does not check diodes.

Well, you could go to Ohms.

But first, please go to that topic in "electronic restoration" you started and do check that capacitor - it is close to 99% chance this is your problem if it is the board (unless you have a bad crystal).
#17

I also have a small cap checker it beeps high and the tone lowers and if the capacitor is shorted it keeps on beeping instead of stopping. I believe I can use that to check diodes also.
#18

That is unfortunately not a very good cap checking, with beeps.

I would just replace it if you have spare new caps. Cheap and takes the question out.
#19

Tim, I did some digging, and found that transistor checker. Been years since I used it. It does check transistors in circuit, but you can also get false readings. It also checks for leakage, etc. It is foolproof in the respect of how you connect it. Just run the switch up or down until you get a sound. From my experiance, you can check a transistor for shorts with the diode checker function of a DMM such as a Fluke 77. Most are either good or bad. No inbetween, I mentioned the caps - cheap, and you will rule them out. You might try some kind of signal into the cartridge connection - I have seen these go bad and cause the symptom described. Again, food for thought...

   

Tim




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM
462ron
It’s on the bottom of the homepage of our Philcoradio.com homepage! Ron462ron — 07:20 AM

[-]
Who's Online
There are currently 1301 online users. [Complete List]
» 1 Member(s) | 1300 Guest(s)
Avatar

>