| Author |
Message |
    
Ian
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 24, 2005 - 08:50 pm: | 
|
Hi there,
I have a Lunasix F meter that works reliably except it flattens a battery approx. every two days.
Has anyone out there had a similar problem or can advise if a quick fix is possible? |
rick oleson
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 25, 2005 - 06:32 am: |
|
Sounds like you've got a short somewhere. You might look for a pinched wire that's had the insulation crushed off of it. |
Glenn Middleton
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 25, 2005 - 10:40 am: |
|
As you say the meter functions reliably,then the most likely cause is the auto switch-off IC not doing it's job correctly.Unless that is, you have inadvertently locked THE ACTUATING BUTTON INTO THE CONTINUOUS READ POSITION.Has been known to happen,rotate button anticlockwise to clear.If button not stuck or wrongly set,do first follow Rick's advice and look at battery lead.The lead is double wrapped around the board before being soldered,so can get a little stressed at this point.Remove alloy backplate,small screw,watch for the plastic zero set which is now free to fall out and get lost!Remove the four brass slothead screws from sides of circuit board.Holding meter flat pull the two halves of case apart.The diffuser and the glass cell protector are loose in their slots,take care.The dial rheostat is located by a three pin plug,so only give a straight pull upwards when separating case halves.Look at battery lead and also remove any dirt/fluff from the switch buttons/switch casing.Check that actuating button is in fact freeing properly and switch plunger moves freely.
The above are the only quick fixes, along with resoldering fractured/dry joints on the actuating switch that I have used.If the IC is faulty then return to Gossen for a full service/recalibration;the meter will come back as new. |
Ian
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 25, 2005 - 04:25 pm: |
|
Thanks v. much for the info.
The meter's needle does indicate that it is switching off as it should.
I'll have a look at the battery lead, and if that doesn't work send it back to Gossen. Probably worth the cost of an overhaul as otherwise it's a good meter. |
|
