Fluke 1911A multi-counter not working

[Helios]

I am currently trying to repair a Fluke 1911A and I am pretty stuck.

When turning the device on, no matter what I do, no digits get displayed and only the overflow led is on. I tried using the troubleshooting flow chart but is was without much success (..send to nearest service center..).
Has anyone ever had a similar problem with a fluke counter and can help me out a little?

[wn1fju]

Does your 1911A have the battery option?  If so, the batteries need to be installed, even if you are running it off of AC.  In fact, check the -12V out of the inverter.

I actually got two of these units in an eBay purchase.  One was completely inoperative and the fault was isolated to one of the custom controller chips (U6, or U7, I can't remember which).  It was easy to isolate because I could switch the chips between units and watch the fault follow.  I know that's not particularly helpful in your case, but it is a warning that the custom chips can die - and that's pretty much the end of the story.

I would not spend any time, effort, or especially money, trying to fix the 1911A.  It is, in my opinion, not a very good counter.  I would look around for something else.  There are cheap new Chinese models and lots of used (and perhaps broken) HP models for well under $100.  Fluke was not known for their counters, although the later ones made with Phillips aren't too bad.

[Helios]

It is the version without the batteries. TP-2 is at -12V. I will try to do some measurements and check if it could be U6 or U7.

Thanks for the advice! I got the unit basically for free so no big loss, still would be nice to get it working.