The BM869s, 14KV or Bust

It's had it's rotary switch cycled 50,000 times, it's swam with the fishes and it has been exposed to transient levels that damaged it's input. Can it survive a 14,000 volt transient with a $1.00 budget and no PCB changes? Watch and find out.

[shanookflc]

Wow just a matter of changing two transistors brilliant work again. thanks Joe you put so much hard work into your videos.

[jamesaustin]

I bought the Brymen BM869S from TME. I am extremely happy with the shipping time. I am almost positive that I ordered it Tuesday and today is Friday and it's HERE!!! I wish I would have known about your video's a few years ago! Keep up the amazing work!!!

[klassichd]

Great result! Success of engineering, careful and systematic work. And also reveals the hidden margin of the Brymen design. Love this.

[stanleywhiteman]

Thank you Joe for sharing your extensive knowledge

[hightttech]

Great work Joe. I was riveted to my seat. Love your style and your videos.

[billywhizzy]

Well done! That was such a simple mod with excellent results. As always, thanks for your videos!

[noellarcena]

NICE VIDEO, i bought BM869s in TME, Poland last 2016 and still my favorite all around meter

[DonDenaBrenna]

you certainly play with some high voltages! Glad you hit your goal of 14kv! Once again these meters are great the way they are from factory but I find it interesting how you improve on them.

[SIXSTRING]

Love your videos Joe. Geez, I watch more of your videos and and a few other youtubers who do similar videos than I watch anything on TV. After seeing your praise of the Brymen 869S in many videos I ordered one today. Found myself testing a power amp last night where I could have used some the 869s features. I have the BM 235 and love that. This should be the last handheld meter I'll ever need. I'm somewhat new to the electronics world but learn a ton from guys like you, Dave Jones and Paul Carlson. I spent 30 years in the machining trade as a jouneyman toolmaker and CNC programmer but always loved repairing and modding my own old tube guitar amps and accessories. Thankfully my math skills from machining translate pretty well in this world. Keep the great videos coming! always exciting to see a new one from you. ;-)

[Gooberslot]

What replacement transistors did you use? What's the difference in cost?

[jameslandes]

Another awesome video Joe! Thanks a million!

[derektodd]

Great video Joe. Love your work, although some of it way above my station.

[fieldsofomagh]

+4Kv improvement on a already quality meter.

[xyz]

great job, what transistors did you use for the modification??

[morte]

Can you show us how you made the Devil Lady generator?

[wmajstrzyk_LE]

I wonder about one thing within this multimeter, . It is dual thermocouple capable, but what is channel to channel isolation between the 2 thermocouples. (max standing voltage)

[Daveyk]

Reminds me of "Deconstruction of Fallen Heroes". Damn, is the the meter MFG's fault and/or Dave's fault? Did Dave get so much invested in this meter that he had to put his name on it, faults and all? I really think he designed an Engineer's tool, and it is probably excellent for that, or at least specific jobs. I don't think it is good for day to day technical use. I for one, find it difficult to to use it for trouble-shooting in resistance mode. Yes, it is much better in manual resistance mode. The problem is, I find it difficult to tell what manual resistance range I am in when I push the RANGE button. That said, it is an "Okay" meter, but so is the free Harbor Freight CEN-TECH. Laugh at those if you want, but for basic work or trouble-shooting, they do work and are accurate enough for trouble-shooting. I wanted a super portable DVM; which I did not get with the 121GW. I should have bought the Agilent or Fluke. Sure more money, but those are use them meters, not engineering or experimentation projects. Sad.

[Ruudwardt]

It means the updated BM869 can be hooked to many electrical fences and survive.

[ejenka]

Which type of transistors are bthe new?

[chrimony]

Would have been better if you had edited out functional tests except for last one.