Phone Ringer on a 012 T-R board won't work 1

[Twis]

We set up a seperate line for a ringer and for some reason it will no longer ring. I tried a cheap test phone on several of the ports on the 012 board and none will ring the phone. It worked before but for some reason won't now. I tested the phone on an MFM module to make sure it rings and it does. I can hear the ring in a Lineman's test headset but it also doesn't ring the actual ringer in the test set.
This almost sounds like the question posted a little while ago concerning a Polychem speaker phone and low voltage but what bothers me most is it used to work.

 

[eltorodeoro]

to my recollection, there's a daughter board on the power supply that supplies ringing voltage for the 012s. maybe that went bad? try a new power supply?

 

[tdaugirdas]

Is this just an 012 module or an 012 module with ring generator? If it is just a plain 012 module - the ring generator is inside the power supply (a seperate module). If the 012 module says "with ring generator" - the ring generator is built-in to the module. If you have the plain type - replace the ring generator inside the power supply. If you have the 012 with ring generator - you need to either replace/repair the whole 012 module (best option) or buy a ring generator unit for the power supply and install it.

Tom Daugirdas,
President
STCG, Inc.
stcg.com

 

[Twis]

Thanks for all the info so far. I was checking the equipment and found that it is a 012 WITH Ring Generator. I thought I had some older boards to replace it but all I have is a 012 (without ring generator). I'm assuming I will need to replace the board to get the bels on the ports to work.
Would a unit that amplifies to ring work in place of relacing the board? I only have one port that is using a bell.

 

[tdaugirdas]

You would need to add the seperate Ring Generator unit to the power supply. Then, you could use the existing 012 with non-working ring generator or a plain vanilla 012 module without the built-in ring generator. If you open up the power supply case - you will see that it is designed to accomodate the seperate ring generator at the top of the power supply module. The SS2 ring generator module for the power supply should come with the two connector cables that plug into available slots on the power supply main board.

Tom Daugirdas,
President
STCG, Inc.
stcg.com

 

[Twis]

Again, Thanks very much for the help. At $140 my best bet would be to buy a refurbushed 012 board with ring gen and just replace the board. It sounds like it will cost more to do a work around than just replace it.

 

[tdaugirdas]

I don't have a clue as to the cost of the ring generator for the power supply module - but I would guess it is much cheaper than an 012 module. And, you could then have your plain vanilla 012 module as a back-up.

Tom Daugirdas,
President
STCG, Inc.
stcg.com

 

[Twis]

Good point, I checked with CMS Communication and they had the 012 board but he didn't say anything about the SS2 Power Supply Module. I'll have to keep looking around a little bit.

Thanks

 

[tdaugirdas]

I guess it is a model 61388 ring generator, not SS2. But the price I see in google or froogle is higher than for an 012 module with ring genertor - so it may not be worth your while.

Tom Daugirdas,
President
STCG, Inc.
stcg.com

 

[merlinman]

OK, there were 2 versions of the 012 Module.

One had an ON BOARD ring generator, one did not.

THUS, the one that did not, required a RING GENERATOR (DAUGHTER BOARD) to be installed into the POWER SUPPLY for THAT PARTICULAR CARRIER.

WITH A RING GENERATOR INSTALLED, the ring voltage was delivered to the BUSS on the BOTTOM PAIR of "FINGERS".

You can prove this is working by placing a "NON-CONCUCTIVE" credit card or some other plastic thingie in a SLOT and then using your METER CORDS to the left and right of the "NON-CONDUCTIVE" thingie, and measuring the 90 to 105 Pulsating DC at that point.

Perhaps this can provide some insight.