Was testing to see if a bug zapper grid voltage (=< 2800VDC) had discharged yet. Set meter to highest range (1000 VDC) and probed across the grid. Heard an audible arc so voltage must have discharged into something in the front end of the meter. Now all functions that use the V-Ohm/Com input just reads "OL" (over range). Even the continuity test with the probes shorted reads OL with no beep. Opened it up and found input resistor R31 47 ohms, completely open. Replaced with new resistor but meter still reads "OL". The low battery icon on the display is visible even with a fully charged 9V battery. Any insight into what other component to check much appreciated.
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I'm trying to fix a digital multimeter. It was working until I blew the fuse (actually the "buzz" for continuity wasn't working). I've now replaced the fuse but it's acting strangely. When I turn the dial to V, nothing happens. But when I turn to anything else, it makes a continuous, very fast clicking sound - like the piezo buzzer is trying to do something. And at each position of the dial (other than V) there are brief flashes of life on the LCD. It doesn't seem to matter if the probes are connected. I wasn't sure where to start, so I've tested most of the diodes and cleaned the... -
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2024 BEV, BIH, SARAJEVO START PROJECT: ELECTRIC VEHICLE TOYOTA 4 RUNNER CONVERSION http://www.bev.ba/TOYOTA4RUNNER/index.html
2023 BEV, BIH, SARAJEVO START PROJECT: SECRETS AND MANUFACTURING PLANS (AS MY REPLICA) OF THE LIBERTY ENGINE 2.0.
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2019 BEV, Croatia, Ston:, Broce: PROJECT - PROJEKT ELEKTRIČNI GLISER http://www.bev.ba/ELEKTRICNIVANBRODSKIMOTOR/indexHR.htm...12-28-2023, 02:09 PM -
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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My daily carry just stopped working only me. Started last week with the voltage flickering. Found one lead was broken and I ordered new ones. New leads didn't change anything, it displays “-1” on all settings but on continuity will give the tone when touching. Checked battery and found the fuse blown. Replaced fuse but same results. Cleaned the dial and led display and its parts. Board looks nice and clean no burned or broken components. Nothing traumatic happened to this multimeter I put it aside when I found the lead broken and didn't touch it until I got the neAnyone have any ideas what's... -
hi i want to convert my simple digital tv because the motherboard is dead to wifi motherboard but with the ability has and tuner for digital channels DVB-T compatible in europe
is there ?
do you have to suggest me one ?
thanks on advance...
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