[Fixed] BM235 issue no Loz DC, Voltage, ohms and diode

[taiteki]

I buyed 1 year and a half a bm235
for the first time a the dmm have a dim lcd but i doncared about that because i can read with no problems.
but some weeks ago the DMM stop to work poperly, i suppossed to be a battery problems and buy some new battery, but the issue continue.

The dmm dont work in voltage LoZ,DC, ohms and diode.

1 Loz, i put a 9V battery with arround 8,3V and got this.

2 DC the same with the DC range.





3 the ohms start with 0L but after short the terminas always show 0000.0ohms





4 in diode always show 0.000v


some one have the same problem?

thanks and apologies for my english.

[retiredcaps]

Check the soldering on the inductor.  See

[taiteki]

Thx retiredcaps  .

dont remenber that video!.

L3 disapeared.





i put a new ferrite bead and
 


 

[retiredcaps]

L3 disapeared.

I wonder if this L3 will be a long term problem?  You are the 3rd or 4th person to have this bad soldering problem.

BTW, for the LCD contrast Dave did a video too.

[retiredcaps]

We are also finding out that on some older Fluke 17x series, the soldering on that inductor/ferrite bead has aslo degraded or shook loose due to abuse?  However, this is over several years, possibly one decade.

https://www.eevblog.com/forum/repair/fluke-179-repair/

https://www.eevblog.com/forum/repair/fluke-179-not-working/

https://www.eevblog.com/forum/repair/fluke-179-76688/

[retiredcaps]

Thread for dim lcd on BM235.

https://www.eevblog.com/forum/testgear/eevblog-brymen-bm235-lcd-issues-or-normal/

[joeqsmith]

Mine had a notch cut out I assume for this reason.

https://youtu.be/g3uYcHAumhA?t=436

[taiteki]

Thxs for the links.

in the case of this DMM it was in a non climatized zone, 40ºC-45ºC in summer and 8ºC-20ºC winter (Seville-Spain).

Possibly it has been damaged for a long time, since I have only used it to measure current.

in the image of my dmm it seems that the ferrite bean broke apart.