Avo multimeter model da116 - UK Vintage Radio Repair and Restoration Discussion Forum

George G4EUF · 6th Dec 2021, 10:56 am

Hello all, I have a digital AVO multimeter type DA116, unfortunately, one or two segments of the LCD display are missing. I have tried to contact AVO ( IF THEY STILL EXIST? ) without success. I am quite happy to dismantle the meter to see if there and markings on the display, ie ref number. Many thanks. George.

dazzlevision · 6th Dec 2021, 11:42 am

Quote:

Originally Posted by George G4EUF

Hello all, I have a digital AVO multimeter type DA116, unfortunately, one or two segments of the LCD display are missing. I have tried to contact AVO ( IF THEY STILL EXIST? ) without success. I am quite happy to dismantle the meter to see if there and markings on the display, ie ref number. Many thanks. George.

Avo Ltd changed its name to Megger Instruments some years ago, but they are still based in Dover, Kent.

Technical support: 01304 502 102

George G4EUF · 6th Dec 2021, 1:13 pm

O, thank you for that, I have tried to contact them without success, again thank you/

factory · 6th Dec 2021, 8:25 pm

I don't know if it's similar to the display problems old Fluke DMMs develop, but have you checked if it's just a bad contact on the zebra strip between the LCD & the PCB? this might need cleaning or replacing if the strip can be obtained.

David

George G4EUF · 8th Dec 2021, 8:59 pm

Hello David, thank you for that, I have cleaned all the pins on the LCD display, however, without success. again thank you. George.

George G4EUF · 8th Dec 2021, 9:05 pm

On another note I am building a RF power meter, there are two eight pin SM I/Cs one which is a LT1019, a 2.5 volt regulator I/C, however, there are no markings to indicate which is pin 1 ? no dot or cutaway on the chip ? anyone any ideas

6th Dec 2021, 10:56 am	#1
George G4EUF Tetrode Join Date: Oct 2010 Location: Loughborough, Leicestershire, UK. Posts: 84	Avo multimeter model da116 Hello all, I have a digital AVO multimeter type DA116, unfortunately, one or two segments of the LCD display are missing. I have tried to contact AVO ( IF THEY STILL EXIST? ) without success. I am quite happy to dismantle the meter to see if there and markings on the display, ie ref number. Many thanks. George.

6th Dec 2021, 1:13 pm	#3
George G4EUF Tetrode Join Date: Oct 2010 Location: Loughborough, Leicestershire, UK. Posts: 84	Re: Avo multimeter model da116 O, thank you for that, I have tried to contact them without success, again thank you/

6th Dec 2021, 8:25 pm	#4
factory Octode Join Date: Jul 2009 Location: Cheshire, UK. Posts: 1,733	Re: Avo multimeter model da116 I don't know if it's similar to the display problems old Fluke DMMs develop, but have you checked if it's just a bad contact on the zebra strip between the LCD & the PCB? this might need cleaning or replacing if the strip can be obtained. David

8th Dec 2021, 8:59 pm	#5
George G4EUF Tetrode Join Date: Oct 2010 Location: Loughborough, Leicestershire, UK. Posts: 84	Re: Avo multimeter model da116 Hello David, thank you for that, I have cleaned all the pins on the LCD display, however, without success. again thank you. George.

8th Dec 2021, 9:05 pm	#6
George G4EUF Tetrode Join Date: Oct 2010 Location: Loughborough, Leicestershire, UK. Posts: 84	Re: Avo multimeter model da116 On another note I am building a RF power meter, there are two eight pin SM I/Cs one which is a LT1019, a 2.5 volt regulator I/C, however, there are no markings to indicate which is pin 1 ? no dot or cutaway on the chip ? anyone any ideas