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Hi,
I need Schematic Diagram of Samsung Sync Master 740NW LCD Monitor . If anyone have this schematic diagram of this Model then please share with me . Thanks in Advance .
Hi,
I need a Leadman (POWMAX) LP6100 Schematic diagram . This PSU has the problem in primary section of both MJE13007 . After repairing the Primary section this PSU is running automatically when I attach power cord with it !!! It doesn't need to be switch !! I have checked the controller section...
It seems to be a SMD based Circuit . My suggestion - don't try to repair this kind of SMD based Power supply circuit . This SMD Based circuit will ***** your brain and you will not found the parts easily .
I am also looking for a diagram of Bestec power supply which is also 4 photocouplers like...
No dude , It does not work . :sad: The same Result with 2SC5027.:sad: Then I thought that - it is the problem of Inductance of Transformer . So, I changed the Transformer also . But nothing work .
What should I do now ??
Thanks for your helpful tips . My own power supply has a 2SC5027 transistor in +5VSB unit which is now connected with my PC . Let me few hours to check with it . I will inform the result few hours later .
Thanks
No, that is not . I just shared my practical knowledge with you as you can help me properly to solve the problem - not more than that . May be you are getting angry !! I could not express myself due to my poor English - sorry for that .
Most of the ATX PSU uses 2SC3150 or 2SC3866 or 2SC5027 transistors for +5VSB Primary Section . Look at those three transistors data sheet - they all have Vce is 800V . But if you work in ATX PSU then you will see that Collector is Actually crossing 1000V, may be it is 1500V to 2000V !!! I think...
Hi,
All the single Parts of this +5VSB unit is OK . But this SMPS is not turning on . In the Red circle of the Transformer will be 1000V but it is showing 320V . Why there 1000V is not coming there ? Why the SMPS is not turning on ? What's the problem there ?? I have attached the schematic below...
Hi,
I get a ATX PSU 450W for Repairing one of my customer . But This PSU have all parts OK . I am getting 5V PS-ON and 5VSB . The Power Supply is not running . But this PSU is Running - When I make short Pin 4 of TL494 with GND and this time I do not need to short PS-ON with Ground . Just Short...
I have changed all those capacitors, Diodes and Transistor with new one . But still the Power supply is not running . What will I do now ??
Please Response ........... I am waiting for your reply ......
Oooops !! I said it before - I am not a student of Electronics . I don't know so much theory like you . I am just a practical Electronics worker . I have just share my Practical experience - that's all .
Why your PC running with Partial Load But Not running with Full Load/Suddenly damaged - May...
I have checked Q4 and Q5 C945 - Both of them are Fine . C9/C10 are 2.2μF/50V - this capacitors seems to be OK . Will I change it though ?? There is no R7 and R11 Resistor . They have only one fusing Resistor 10Ω Which is in Transistor's Base R6 and R10 . But they have used two signal/Crystal...
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