Good afternoon colleagues and friends! By the way, he also, not a bastard, (after all, like me, a professional electrician) tried to study the issue, call there … a fuse, a diode bridge, primary circuits are shorter for breakage or breakdown, but … unsuccessfully.

Autopsy and primary diagnostics The average price of the device is 20 USD. From above, the PSU is latched with a perforated cover, also made of a special profile. In my own practice, I don’t use such BPU-301 devices, due to their high cost. I paid attention to the “professional” PSU from Biom relatively recently, when models that were interesting in terms of size ratio came into my field of vision, for example, this elongated 60W Naturally, I did not buy this PSU to answer these questions … it will still fall into my hands for nothing … The body is durable, you can’t just bend or twist it in your hands, nothing staggers and doesn’t play in your hands. Not at all!
The manufacturer is not bad. This combination of components is optimal for restoring some 36W LED panels. (I’ll tell you about this separately) It became interesting what kind of there is a transformer, what is the topology of the converter, and so on. As always, such devices are brought by friends.

Biom Professional BPU-301 power supply. Doesn’t work when turned on. The case of this PSU is made of thick-walled (3mm), specialized for a low profile, aluminum profile. To restore raster LED lamps from him, I purchase a powerful LED strip BPS-G3-12-2835-120-CW-20, an economy class budget power supply unit TR-60-12V (the schematic of which is here) The other day, a friend brought me this PSU and says – he just bought https://tonaton.com/s_301-panel-saws it, on the same day, he carefully https://tonaton.co.tz/s_250-kids-umbrellas dropped it once and … that’s it. here it is conservative – MeanWell (they have a large selection and the best prices in their segment) https://jiji.ng/26-bracelets. I will not particularly describe the device, whoever is interested in the network will find an overview of it. The manufacturer positions this power supply unit (PSU) as a professional one, therefore it costs significantly more than its cheap counterparts at 300W. More often it turns out to get by with more affordable power supplies of the same Bioma only economy class, I’m interested in how it works and how it works. And here such luck. The other day, I got my hands on a "300" power supply BPU-301 for 12V / 25A from Biom. It was always interesting to study the diagrams of Professional class products. Device and repair