Power supply dso5102p

tershel

Hello, I am from Russia. I bought oscilloscope dso 5102p on aliexpress . It worked for a week, and now when you turn on the screen and button illumination flashes and goes out. The fan is spinning. The faulty power supply. Could you give an electronic circuit of the power supply for repair. Or where I can fix or buy a power supply for my oscilloscope.

tershel

T1G/136012984

tershel

Hello, I measured the voltage at the output of the power supply when it is connected to the circuit Board of the oscilloscope and when it is disconnected from the circuit Board of the oscilloscope. in both cases, the output voltage changes abruptly from 0 to the required voltage, and again decrease to 0 and the process is repeated. Unfortunately now I can not capture video. When replacing the PWM chip, the power supply can make, but cannot work for a long time 30-40 minutes, and again the voltage starts to change from 0 to the required value and then disappears.

tershel

Here is my seller (https://ru.aliexpress.com/store/ ... 12010608.0.0.uaeDea) he says that he has no power, I wanted to buy him a power supply. Why do I refer to it ?  what can I do with my seller ?
could you send me the electrical diagram of the power supply in the mail:   tershel@mail.ru   ?

tershel

replacement will be under warranty ? free? The oscilloscope does not worked for months after purchase.

tershel

Hello, I have to once again turn to you as my seller ignores me, does not answer questions and the power supply are not returned. could you help me in this matter ?

tershel

wrote you a mail, but unfortunately you do not answer. my mail tershel@mail.ru