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
The list of my radio & TV collection!
Yes, Michael. But strangely enough, I managed to keep the original veneer. I must admit that I don't really like it, so ...RadioSvit — 02:21 PM
The list of my radio & TV collection!
Good radio. I bet there was a lot of veneer fixing.morzh — 02:16 PM
Philco 46-480 Electronic Restoration
>> it is because I am retired and a little demented. You have just the right amount of it. No perfectly sane p...morzh — 02:14 PM
The list of my radio & TV collection!
Old Zenith 5S-29 tube radio. First turn-on after repair and reception quality testing. Demonstration of the operation of...RadioSvit — 01:27 PM
Philco 42-345 Restoration/Repair
Welcome to the Phorum, osanders0311!  Regardless how far you intend to restore this set, first priority should be replac...GarySP — 11:51 AM
Philco 46-480 Electronic Restoration
Joseph, it is because I am retired and a little demented. My problem is that I wanted to own a collection that spans th...MrFixr55 — 11:29 AM
Philco 46-480 Electronic Restoration
Wow, here I am with only two restored radios. I’ve got to boost those numbers! If you can’t run with the big dogs, you m...jrblasde — 10:04 AM
Philco 46-480 Electronic Restoration
Hello MrFixr55, That will for sure keep you out of trouble! Last Sunday was spent mostly doing yard work anyway the we...radiorich — 09:50 AM
Philco 46-480 Electronic Restoration
Throw in all the Audio equipment that has to be kept in a bedroom (my office)L. 8 portable self contained PA speakers, ...MrFixr55 — 07:40 AM
Philco 42-345 Restoration/Repair
Looking at the pic supplied by Rod B, you can duplicate the missing loop antenna. 10 gauge copper wire can be used to m...MrFixr55 — 01:20 AM

[-]
Who's Online
There are currently 294 online users. [Complete List]
» 2 Member(s) | 292 Guest(s)
AvatarAvatar

>