2D72 DMM spoiled
Edited by FatBoy at 2021-5-12 21:49Hello, my 2D72 cannot measure high voltage.Is there a fuse I need to replace?It can only measure low battery voltages like 9V or 3V.If I use it to measure 60V, it says 0.000mV.Same for AC measurement, I plug into the mains and it shows -0L.
Any help greatly appreciated.Thank you.
Please refer to this post.
https://www.eediscuss.com/forum.php?mod=viewthread&tid=15336&extra=
谢谢 :handshake
Looks like R13 also burnt.What is the value?
R15: Resistor-Fixed,1K,1/16W,0.1%,TCR25ppm,R0603
R14: Resistor-Fixed,10K,1/16W,0.1%,TCR25PPM,R0603
R13: Resistor-Fixed,101.01K,1/16W,0.1%,TCR25PPM,R0603
谢谢
From the photo, do you think R12 is also burnt?
Edited by FatBoy at 2021-5-14 15:26
Hello Amy, I have a problem.The shops in my country don't sell SMD resistors & definitely don't have resistors with tolerance of 0.1%.
Where can I buy those?Do you sell these parts?
Thank you for your help.
We can send them to you, but the freight is expensive.
Maybe you can purchase them on aliexpress.
https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20210514003914&SearchText=0603+SMD+Resistor
Hello Amy, what is the shipping charges like?I'm in Singapore, usually when I buy things from aliexpress, light items the shipping is about SGD5.
I've checked aliexpress, min order quantity for the resistors is 100pcs per resistance value, so if I order R12, R13, R14 & R15 that would be 400pcs total.So I don't know what to do with the remaining 396pcs after I repaired the DMM. ;P
Please let me know your shipping charges.Thank you.
Edited by FatBoy at 2021-6-8 11:52
Hello Amy, can you sell me the parts please?The parts with such tight tolerance are impossible to find.With 0.1% tolerance at 1/16W, and value of 101K ohm, I cannot find it in Aliexpress or ebay.
Thank you.
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