Re: Why does my Uni-T multimeter not measure anything?
I thought about that. However, I'm not sure that can cause a short circuit in the multimeter.
I'll try and take a better photo of the burn tomorrow and upload it.
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Re: Why does my Uni-T multimeter not measure anything?
It is hard to see. May be the trace is blown up.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
There are some burn marks at the joint of the socket with the board and with that big metal bridge, I'm not sure how to call it. You can see it in the pictures above. Can those marks cause the multimeter to malfunction?Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
take the board out and check for burned tracks near the socketsLeave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
so you had it set up for amps then measured volts ? mmmm have done this to my meters in the past and gave up trying to fix and calibrate them .Leave a comment:
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Why does my Uni-T multimeter not measure anything?
Hi! So, a couple of months ago, I got tired of me watching my movies and when someone flips a certain switch in the house, my Blu-Ray to stop working for a second, then come back on (the TV being fine, mind you, connected both at the same outlet). So, I took my multimeter (Uni-T UT33B) and tried to measure the voltage of my outlet when that switch is flipped. Dumb me, I set the multimeter for DC Voltage, while connecting the red cable to the Unfused connection. Of course, both the fuses in the multimeter and in my house blew.
Now, I replaced the fuse in the multimeter, but it still doesn't measure anything. I'll link a video in Google Photos of how it behaves when I don't have anything connected. I suppose there is a short-circuit inside the multimeter somewhere.
I'll also upload down below a photo of the board of the multimeter. If needed, I'll try and find a schematic of the board as well.
Any advice on getting this back up and running? I don't want to spend money on another UT33B, rather I'd buy a better multimeter, but I don't want to spend that kind of money right now, as I'll soon need a serious laptop for Video Editing and Android Studio, and those are very expensive.
The video: https://photos.app.goo.gl/uguwZCw7xSuwmTQu9Attached Files -
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Hello, there were probably topics like this, but I need opinions about these 2 multimeters or maybe there is another one on the market worth to buy ? .
I am going to change the multimeter and I do not know if the 2x higher price for Brymen will convert into speed and comfort of a work ...
What would you recommend?
Brymen BM869s or UNIT UT18B pro?
I care about accuracy and security, and the meter will be used for computer hardware.
Thank you very much in advance for your comments and suggestions
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I am trying to repair an LG split AC indoor unit, which does not start and gives a CH05 error code.
This indicates an error in the communication between the outdoor and the indoor unit.
The outdoor unit is fine, so the problem is the indoor PCB.
The indoor unit is an LG PC09SQ NSJ (3SNM09JA2FA), and the PCB has the following type number: EAX35907219-1.2 (see photo1)
I changed optocouplers ICO1X & ICO2X and the NPN transistor S9013 which drives optocoupler ICO2X (see photo2), but this did not remedy the fault.
Does anybody have the schematics of this board,...02-01-2025, 12:55 PM -
I have finished my work. The new lights come on except the one for stereo, I reversed the bulbs to no affect, anyway, the unit powers on, relay clicks. I have no DC voltage in speaker outputs, I also do not have any AC in the speaker outputs. There is some faint crackling in the speaker. This unit cranks up loud so I had the volume on very low. Everything seems to be fine but I can't really check the switch until I can get sound out of the outputs. I was going to do caps for the power supplys and the tone board but thought if it was cranking loud at one time maybe just leave it alone until it...
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I am new to electronics and I'm understanding most of what I'm reading but I have a mosfet on my board that I've identified as a P-channel Trench Mosfet. I haven't a clue how to test this and what I should expect to see with the multimeter probes. I am hoping someone with years more experience than myself can help me understand how to use a multimeter to read this. Please look at the drawing I have attached to this and can you try to explain to me what I should be doing with my multimeter in diode mode and what results I should expect from a good mosfet?...
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Hello,
I have a laptop that isn't turning on. When I disassemble it and plug in the power connector with the pcb by itself, I can see with a thermal camera I bought that TPS51285A is the only thing getting hot.
So of course, the first thing I do is google the laptop model and the IC, and it just happens that I stumble upon a video by Northridgefix attempting to repair the exact same problem, only for it to catch on fire.
I thought that maybe I'd be lucky so I bought a 1285A, that came in as a 1285B. The only difference I can see between them is that the 1285B...
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