Lambda MML 400 Switchmode Power Supply Troubleshoot And Repair
Рет қаралды 1,968
13 күн бұрынFollow along on this troubleshooting and repair adventure of a Lambda Omega MML 400 switch mode DC power supply (SMPS). No schematics are available so let's see what it takes to track down the problems.
#powersupply #electronicsrepair #learnelectronics
@garretr4488 11 күн бұрын
Great diagnosis! Lambda made some great supplies
@EriksElectronicsWorkbench 11 күн бұрын
Thanks and yes they sure did make some quality heavy duty power supplies.
@abdurrahmandemir2038 10 күн бұрын
Wow. Module is quite quality
@richardcarl6901 10 күн бұрын
Great video and well done trouble shooting!
@EriksElectronicsWorkbench 10 күн бұрын
Thank you!
@coloradowilderness3139 11 күн бұрын
Really very helpful diagnosis !
@EriksElectronicsWorkbench 11 күн бұрын
Glad you found the video helpful!
@sebastian_harnisch 11 күн бұрын
Thank you for another great video! One minor note for someone trying to replicate the high frequency AC voltage measurement: The 34465A is specified for up to 300kHz, but most hand-held DMMs are much more limited, e. g. Fluke 179: 1kHz, Fluke 87V: 20 kHz, Brymen BM789: 100 kHz. An isolated oscilloscope (consider max. voltage) or a HV differential probe can help here. One more thing: Did you happen to measure the waveform/peak voltage at this cap afterwards? Would give some peace of mind that the selected capacitor with its voltage rating is properly chosen. (I'm pretty confident it is...)
@EriksElectronicsWorkbench 11 күн бұрын
Thanks for watching! Yes you need to know the limits of your test equipment. I did check the voltage and waveform across the ceramic surface mount capacitor. It is a 94 KHz very narrow spike waveform with the spikes going to about 5 volts and it is riding on 3 volts DC. Note this is voltage across the cap, not referenced to ground, measured with a Fluke 199C isolated ground scopemeter.
@MrLinuxone 11 күн бұрын
Excellent !, I love your videos, thanks .
@EriksElectronicsWorkbench 11 күн бұрын
Thanks for watching and glad you are enjoying my videos!
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