Hello everyone

[jkarma]

Good. I am an electronics technician and I try to repair old consoles like NES, SNES, PS1 etc. for me and my family. I don't do it as a profession, just as a hobby. Now I am repairing an old Super Nintendo and I have some doubts that I try to clarify on this site. Thanks and best regards.

 

[ChubSwagLad]

Good. I am an electronics technician and I try to repair old consoles like NES, SNES, PS1 etc. for me and my family. I don't do it as a profession, just as a hobby. Now I am repairing an old Super Nintendo and I have some doubts that I try to clarify on this site. Thanks and best regards.

welcome

 

[Nikokaro]

Hello (slightly grown up) boy.
Welcome to this place of fun but also of technical expertise (the kind that interests you most, I think). I wish I had such knowledge myself! I'm guessing you've already amassed quite a collection of video game antiques.

 

[Little_Anonymous_Hacker]

Welcome to GBAtemp!

 

[jkarma]

Let me tell you. This console worked fine but had noise, like hum, in the sound, I changed 4 capacitors from the power supply which gave wrong measurement with capacitance meter, then the hum or noise disappeared. But when assembling the console, nothing appeared, just snow on the TV. I measured, with the oscilloscope, the clock signals to the S-CLK outputs and they all gave correct except pin 4 (XOUT) which gave a continuous 0V, that is, it did not give any signal. So I followed the Snes PAL schematic of the circuit that surrounds the S-CLK and saw that a connection was missing, pins 8 and 9 were joined but they came out on the air and I connected them to the junction of C3 and R3, as in the diagram, and that's when I received the signal that I have shown you on pin 4 of the S-CLK, this signal is supposed to be the master clock of the system and it should be a square wave from 0 to 5V and around 21 Mhz, but it gives that strange signal superimposed on an alternative signal. The other outputs of the S-CLK are correct (pin 5, 6 and 7). Now with this XOUT signal I get video but it is a black screen and nothing else. Maybe I should change the S-CLK chip? Well, I have measured the rest of the components and they are fine. I also don't know how to get this S-CLK chip.

 

[Nikokaro]

@jkarma, you forgot to write directly in english, or to have Google Translator (or other) translate it; I think it's because of carelessness. This way, however, few will understand what you write. It's also a matter of transparency and respect.

 

[jkarma]

@jkarma, you forgot to write directly in english, or to have Google Translator (or other) translate it; I think it's because of carelessness. This way, however, few will understand what you write. It's also a matter of transparency and respect.

Sorry. It has been an oversight on my part.

 

[Nikokaro]

Let me tell you. This console worked fine but had noise, like hum, in the sound, I changed 4 capacitors from the power supply which gave wrong measurement with capacitance meter, then the hum or noise disappeared. But when assembling the console, nothing appeared, just snow on the TV....

Now I understand a bit more, albeit little... hehe. If you want help you should open a thread in the "old consoles" section, and also, especially, in the "recent questions" section which is very visible and frequented.
Good luck.

Note: Specify well, in the thread title, what it is about, to attract the right attention (of those who understand the topic)

 

[Deleted member 550701]

Hey, enjoy this place!

 

[Akz7]

place is pretty useful