atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services Telephone Repairs & Equipment Northcom 1A3, no dial tone

i have had this system left over form my Satellite Business from years ago, i stopped using it because the handsets wasn't getting a dial tone. still powers up an the handsets have power also. any ideal on the issue?? i know its old but I'm handy with electronic and can use a solder iron. any suggestion on where to check and what to check?? thought i might us it if i get it working. Thanks Guys.

I haven't seen a 1A3 for YEARS!

You profile isn't filled out so I know your knowledge or skill level regarding trouble shooting your system. I don't want to talk down to you, but I also don't want to talk over your head either!

Do you have access to the manual? Page 8-2 section 800-25 shows the procedures for trouble shooting CO lines on your system.

no manual except standard use manual, was doing some checking just now. no dial tone to handsets but have dial tone on the power failure connection. i tried another extension still no dial tone an any line.

PM Sent

Up near the top of the page the drop down menu My Stuff is blinking, that means you have a Private Message.

Generally the scope of the forum is assistance with programming and troubleshooting that would be found in User Guides and Manuals. Replacing circuit boards and daughter-boards, but soldering components is out of the general scope of the forum.

Understand, not sure on the testing. not sure where to look on the board, i guess I'll just sell it for parts. kinda sucks i have 2 new phones that were never hooked up still packaged that i bought before the system went down.

If you can't get them up and running you can try ebay, craigslist or even...

https://usedphones.com/sell-phone-system-equipment/

Look at how much electronics have changed since 1985-ish when the 1A3 was generally still new.

Windows 1.0 was release...how much money would you spend for that OS running on a 386 machine (that was also a new release in 1985)?

I wouldn't expect getting much money selling one, but if you find someone in desperate need of one then it's all timing.

Don't forget that this is a two-pair system and it is polarity-sensitive. In addition, the second pair's polarity must be reversed, as in tip-yellow, ring-black.

From Table 4-1 on page 4-3

Ed I think, you might be thinking of the Inter-tel Premier ESP. They did indeed have the second pair reversed and if you didn't you just popped the fuse on the station card and brought all six phones down until you replace the 1A fuse.

I remember something about that, now that you mention it. When we first started getting mod-key 16's, GTE would send some 1 foot line cords for patching into the mod jack's on the connecting block. One end had a piece of red heat shrink on it to indicate it was wired with the reversal. So you wouldn't use it somewhere else by accident.

Jim