Oscilloscope service manual (schematic) Lvyang YB4325

[jeffnogdeveloper]

Hello friends.

I'm new to the forum, so forgive me if I'm doing something wrong.

I'm looking for the Lvyang YB4325 oscilloscope schematic. Here in Brazil it is the Minipa MO-1227. I also found it as GW GOS-626G. (see attachment photo)

My device has a horizontal problem: there is only an image from the center to the right. I measured the voltages at the source, I also measured the output transistors, I changed them to test... but the problem remains.

I noticed that the voltage regulators get very hot.

So having the schematic would help me a lot in identifying the problem.

Thanks.