Re: Sanken SMPS
Is it even possible to tell something about these parts without scehmatics? (It's kinda strange that it's impossible to find any information about this smps, or isn't it)
spdf
Member
Last Activity: 09-13-2017, 06:02 AM
Joined: 08-31-2017
Location: Vn
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Last edited by spdf; 09-13-2017, 06:01 AM. -
Re: Sanken SMPS
There is nothing. It's just black ;]Leave a comment:
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Re: Sanken SMPS
As an On-off switch.
There is no short if I unsolder pin 6 from power factor correction IC and relay is still turning on.
I managed to find two bad SMD transistors (or it's a diode?) + smd cap in question. Does anyone have a clue what kind of transistors are they and cap?
...Last edited by spdf; 09-12-2017, 03:58 PM.Leave a comment:
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Re: Sanken SMPS
Thanks for the input!
In diode mode bridge rectifier reads as expected, though resistance of outer pins in circuit is in megaohms range.
Voltage I measured on filter caps is ~300V DC while relay is not activated (does that make sense?). Is it still possible that bridge rectifier produces short?Last edited by spdf; 09-06-2017, 11:12 PM.Leave a comment:
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Re: Sanken SMPS
Is there any possibility that this chip (in photo) is shorted? Is there any way to test it?...Leave a comment:
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Re: Sanken SMPS
Is it possible that if I left psu turned on with bulb in series that shorted components will become hot?Leave a comment:
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Re: Sanken SMPS
I have totally lost...
I have disconnected all load from psu and added pull down resistor to power up psu, at first bulb ligts up and dim away after ~10s relay clicks and bulb is shining in full brightness. So i decided there is a dead short some where in psu circuit? Or isn't it?Leave a comment:
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Re: Sanken SMPS
A little update: today I pulled of the circuit (look atached photo) 3 x K2698 MOSFET'S (that was quite a work...) and FSU10B60 diode all these components are fine....Leave a comment:
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Re: Sanken SMPS PSC10089G M
This is my first time I am trying to repair switching mode power supply that I pulled off from old LG plasma TV. After I am it still not working
looking at it every day lol...
Model Sanken PSC10089G M I couldn't find any schematics of it.
At first it was completely dead no output voltage and no standby voltage what so ever. I tried to measure some voltages and I found out that I have ~300V on primary filter caps and that's all. After changing power IC KA7553 standby voltage came a live BUT after trying to powering it on...Leave a comment:
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2sk3659
Hello, could anyone suggest possible modern replacment for NEC 2sk3659 MOSFET?
Thanks in advance!
P.S. I attached datasheet for it.... -
Sanken SMPS
Hi, I have Sanken PSC10089G M SMPS pulled from Lg plasma Tv.
First of all I found bad diode which says n44k on it. Does that mean 1n4400? 6.8V Zener? Looks like an ordinary silicon diode though.
And I have 40 Volt 30A Dual Schotkky Rectifier in question. It reads 0.1V from cathode to anode on both diodes. From cathode to cathode it is not shorted. Is it ok?
Any help will be appreciated
Thanks! -
Re: New Members - please post your introductions here
Hello, I am new here and this is my first post. I am trying to learn how to properlly repair electronic devices. I am doing this just for the educational purposes. After some reading I am trying to get my hands on real devices and as expected tons of questions arises while working on real things. So my purpuse here is to ask questions and learn from the profs.
Cheers!Leave a comment:
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