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Can I use BT139-800 or BT139-800E ?
I am a beginner in electronics and trying to fix 875VA & 675VA inverter boards.
Both inverters have problem in charging section. one inverter is taking high current from battery while inverter is on and then battery low indicates then inverter goes off and...
@BradtheRad checked the relay with external 12v DC and connected the relay contacts with multimeter in diode mode, relay contacts are working fine. power supply to relay have BD139 transistor and checked with multimeter. its giving value and not shorted. also same with Diode, no shorted or open...
Hi,
when input voltage is high, output voltage of the stabilizer also high.
I am a beginner in electronics.
Buck is not working in AC stabilizer. Find no physical damage on the PCB. relay contacts working fine. tried checking diodes and transistor for relay to on off, all are with multimeter...
sorry. I have no schematics. I found bulgy capacitor in my so I tried to replace it with new so shop keeper told suggested 5000uF. since I am not aware of the ratings then I have bought 4700uF capacitor.so raised a question here to know whether he is right or not.
Inverter model is Microtek...
There is no change if I unplug from inverter output still all led glows
only one 220volt AC LED is connected at inverter output so it can't be overload
Also battery is charged and 6 months old
Its a fixed Input supply (220Volt)
There is no owner's manual for troubleshootings.
Nearly 8 years...
I have my Mahindra powerol inverter 1000VA making continuous beep and all led glow except battery indicator on inverter panel . should I change the PIC16F72 or any resistor ?
Kindly help me
Thanks
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