anyone know of any good basic electronics courses online? or s.m.p.s?
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Re: any electronics courses online?
All About Circuits is a good one. A good understanding of the principles and theory of electricity, electronics and magnetism is required before you try to learn how SMPS technology works, it's certainly not an overnight thing.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Hi, I rescued a Samsung UN40H5003AF (H = 2014 FHD) from the curb. Symptoms are: standby (red) light comes on, stays on for 8 seconds, flickers off, then comes back on, and the cycle continues.
Service manual: https://www.electronica-pt.com/esque...is-u8la-71272/
SMPS board: checked voltages, all seem normal (A13V = 12.8V, UD = 3.3V, PWM_BLU = 0.77V, PS_OnOff = 5.5V). Remove 10p cable to main board -> backlight comes on. I think this means SMPS board and backlight are good.
Main board: BN94-07592P / BN97-08922R... -
Hola peeps.
I'm placing it in this topic, because from what I can see, it is essentially a modified SMPS, but please move if there is a 'correct' forum section.
Recently, I bought an essentially brand new, but defective, 155 amp inverter welder.
The unit would turn on fine, with the digital display and fan doing their thing, however when attempting to strike an arc, the rod would merely spark or just get stuck onto the steel.
Now I know that many (if not most) in here would simply not have bought it, but I am still learning this trade... -
Hi everyone,
I am trying to fix a samsung washinmachine power supply main board.
I already replaced it with another one to fix the machine but i want to try understand the issue with the old board.
Therefore i hope to be able to get some help to explain what to check in order to troubleshoot.
The power supply board reference is the following: DC41-00189a
I have followed one thread (https://www.badcaps.net/forum/troubl...ingmachine-rel... -
PS4 1215A HDMI DIODE READINGS GOOD EVERYTHING GOOD BUT NO PIC? everything is good! what else can it be? if hdmi diode values are good that means encoder and filters are good right? idk what else it can be guys...01-05-2023, 12:32 AM -
This relic from a technology path that came to a dead end (but still has historical interest) was brought in with a dead SMPS, which is based around a MK1210 device. I got it going after a battle. It seems to have a strange design - if it's not getting feedback that the secondary is OK it cause the big FET to go into full conduction and overloads resulting in a blown fuse at best or something worse! I'm using a Dim Bulb Tester (70W/230V) which thankfully has saved the day a number of times whilst repairing.
Now, it loads a CD OK. The motor voltage output (which is built onto the SMPS...
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