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New EEVblog BM786 Multimeter

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Cymaphore:

--- Quote from: J-R on August 07, 2021, 01:46:01 am ---My February 2021 BM789 from Welectron is version 05.  And of course no speaker shield.  Wonder if I should try for a warranty claim...

--- End quote ---

Out of interest, do you have any troubles with v05?

EEVblog:

--- Quote from: Cymaphore on August 08, 2021, 01:19:10 pm ---
--- Quote from: J-R on August 07, 2021, 01:46:01 am ---My February 2021 BM789 from Welectron is version 05.  And of course no speaker shield.  Wonder if I should try for a warranty claim...

--- End quote ---
Out of interest, do you have any troubles with v05?

--- End quote ---

AFAIK all the updates have been for very minor obscure things, so you shouldn't have any issues.
Same for the BM235, it went through half a dozen revisions over the years, but people using original firmware don't even notice any issue as they are so rarely encountered.
I'm waiting on a list of firmware changes so I can include in the manual.

J-R:

--- Quote from: EEVblog on August 08, 2021, 11:43:33 pm ---
--- Quote from: Cymaphore on August 08, 2021, 01:19:10 pm ---
--- Quote from: J-R on August 07, 2021, 01:46:01 am ---My February 2021 BM789 from Welectron is version 05.  And of course no speaker shield.  Wonder if I should try for a warranty claim...

--- End quote ---
Out of interest, do you have any troubles with v05?

--- End quote ---

AFAIK all the updates have been for very minor obscure things, so you shouldn't have any issues.
Same for the BM235, it went through half a dozen revisions over the years, but people using original firmware don't even notice any issue as they are so rarely encountered.
I'm waiting on a list of firmware changes so I can include in the manual.

--- End quote ---
I have little issue with the older firmware but would still like to be able to update it if possible.

Biggest gripe has been the magnet/speaker design flaw.  Two choices are fix it myself or return for a warranty claim.  I'd be curious how the various sellers like Dave or Welectron would handle it.  Most likely shipping costs would be involved so a DIY solution is probably where I'll go.  Or maybe we can get our hands on the shields?

EEVblog:

--- Quote from: J-R on August 09, 2021, 03:13:39 am ---Or maybe we can get our hands on the shields?

--- End quote ---

I'll ask Brymen if I can get a bunch of them.

EEVblog:
Firmware updates for BM786.
And Brymen have confirmed that recalibration after firmware update is not required.


--- Quote ---78601 should be the early sample. BM786 first mass production units were with 78605 firmware version.

78605   1st mass production and shipment
78606   To fix 60k & 600k OHM ranges bugs. (happening while input short and lock range; auto range will not have this bug) 
78607   The status of IC Buffer to control buzzer is unknown after powering on. KaKa may be heard after powering on. Before firmware initializes this Buffer to have the control pin be pull-low to fix.     
--- End quote ---

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