What kind of Spectrum?

Hello skyther Good topic. But there are 46 pages. I can't handle that much...

Hello jdigreze jdi> http://zxnext.narod.ru/ , but apparently I made a mistake... It’s not there. Of course I was wrong;) It’s the same story as with Star Heritage 2 on the Spectrum - Konstantin had plans to systematize information on domestic clones (I hope there are still some left), but life makes its own adjustments, and what is planned is very difficult to implement.

Hello, Sergei Frolov http://zxnext.narod.ru/, but apparently I made a mistake... It’s not there. If you really live in Leningrad, then you can see the information here: http://sblive.narod.ru/ZX-Spectrum/index.htm

Hello, Sergei Frolov It's hard to say... Let's think like this: 1) where the wires from the keyboard go, 5 wires from the joystick connector go there, but go perpendicular to the double-row connector of the keyboard. 2) the video output is located diagonally from the keyboard connector, there should still be etched "R" (red) "G" (green) "B" (blue) "V" (video). And, judging by appearance, the additional brown board is a full-fledged encoder video signal (but which one???) 3) The output to the tape recorder and beeper, if memory serves, comes with m/s 555TM9, which is located next to the keyboard connector. And the tape input, i.e. comparator, assembled on one m/s, located on the prototype field, also next to keyboard connector. 4) The most basic thing: power... It’s more difficult with it - in the same place as the video output, but with on the back side of the board there should be an unetched rectangular area. Yes here it should be connected to the “ground”. In general, the power buses come from the reverse sides of the board, perpendicular to the length of the board. Those. need to decide which one connector, two wires are soldered to these buses. PS: Exactly the same board lies in front of me... ;) But it doesn’t work, I don’t have my hands on it yet got there...

Hello, Sergei Frolov Conan has a website where this information is grouped model by model.

Hello jdigreze Can you remind me of the link?

Hello spensor And with the connectors, does anyone know what goes where?

Hello jdigreze Pretany: plus on 8 resistors next to the processor, minus - at the bottom of the board is long and the path is thick, it even goes under a mole rat.

Hello skyther Thank you, but where can the torn wire from the modulator go?

Hello, Sergei Frolov If after applying the supply voltage nothing is visible, either ground or power supply (type "+5V"). If there is something on the screen, then you need to dig further, but start from the ground. For example, it shows something, but the image “tears” both in lines and in frames - signal "V" (video). Does not show or displays colors incorrectly (gradations of black) - one of color signals "R", "G" or "B". Maybe there is no power supply to the modulator (you need to look at the supply pins m/s modulator) - then we look for where to supply power, and how many volts are needed there...