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Reply to "TMCC/Legacy Track Signal Booster (Dale's Legacy Continues)"

gunrunnerjohn posted:
Gregcz1 posted:

Hi John,

Thanks again for this project.  I just hooked the buffer up and got a RED light.  I did run some engines that were always susceptible to interference like my K-line 2-6-6T and it had NO flicker at all with good response of commands.

The readings I got were: base signal - 1.085, output signal - 10.37.  Any thoughts on what I should do/check?

Thanks,

Greg

First off, is this a Legacy or TMCC base?  The TMCC base will usually get a red light and a few of them get the "no light".  A good Legacy base should give you a green light.

I agree with Chuck, something is very wrong with the readings, with a known good Legacy base I got 1.88 volts DC for the Base DC reading and 5.4 volts for the Boost DC reading.  Given the circuitry there, that's about what you should see.  10 volts on the Boost DC reading is knocking on the door to impossible!  What kind of meter are you using?

My "control" system is a Legacy Base which is also hooked up to a TMCC base.  My testing meter is a Sperry DM-4400A.  Now, today, I just retook the measurements and got .918 for base signal and 3.63 for Boost signal (but that reading was where it finally stop dropping after a minute originally registering at 4.2 v.  

I disconnected the command base from the Legacy Base and got similar readings. 

Does this mean my Legacy Base is faulty?  If so, is there anything I should look for to fix or must it be returned to Lionel?

Thanks,

Greg

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