| Electronics > Repair |
| What more i can do? |
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| 222Lab_Test222:
--- Quote from: Poroit on November 27, 2024, 07:53:37 am --- I have attached a summary of Replies that I cannot see were resolved. Kindly review and advise. --- End quote --- "After couple of weeks test here and there, i somehow find that those MSDOS are not getting input address bus voltages. A16 and A17 " Thats the main cause why i started this thread. |
| Harry_22:
fzabkar, no problem. Don't you know that when troubleshooting, many times you have to take the wrong path. But this is how knowledge is acquired. |
| 222Lab_Test222:
I also somehow feel that there is no issues in BIOS or the BIOS slot, You may say it as a instinct because even if i swap BIOS, the non working board BIOS works in other working board. And regarding the slots of BIOS not getting power, even if the BIOS are not put in the slots, the slots must get the power.(From Working Board) Where it does get power? -From the WACOM Tornado IC. So i think there is no more points if we dig further regarding BIOS things, except than reading the BIOS from Universal Programmer (It will take more time, sorry). BUT if you guys want more digging on this BIOS things we can dig more, of course i am interested in solving board so no worries. Now what i am actually thinking or been trying is, how is the WACOM IC work, as all revolve around this IC. I am wondering whats the things that this IC is receiving, and what is it triggered by to perform it usually. Another another things i am worried is the blink of Green LED. WHY? --In non working board, it blinks sometimes and it doesn't blink sometimes. Does it affect? --Of course it affect, the glow and doesn't glow of green LED makes a power difference in ICs like IC 53 2nd PIN. If LED grow there is POWER and if LED doesn't grow, no power, which may affect how this IC performs. GREEN LED is getting power from IC5 PIN4, and resistance R26. IC5 is under the BIOS Low. Still I thank you for all your supports until now, especially Fzabkar and Harry22 for so much help on it. And sometimes as i said, i forgot the comments so if you guys not getting the answer of questions you ask, Please Kindly ask again. |
| Harry_22:
--- Quote from: CaptDon on November 27, 2024, 01:27:11 pm ---Anyone feel like this thread will go to 28 pages and the unit still not work? --- End quote --- Oh, I didn’t think I’d be writing this here. It turns out that it is not only in my village that it is customary to attack others. Only here it happens in a polite manner. What kind of betting are you running here? CaptDon and PA0PBZ and BILLPOD and Analog Kid and ... https://youtu.be/LLujpdPElPc?si=_gAz4qQeL9xGRzZJ |
| 222Lab_Test222:
--- Quote from: CaptDon on November 27, 2024, 01:27:11 pm ---Anyone feel like this thread will go to 28 pages and the unit still not work? --- End quote --- I do not mind going to 100 no more than 1000 pages and still not work. -Why? Because I am total beginner, yeah in one hand i want to solve this board BUT on the other hand i want to learn, I want to go deep on this electronics things. I want to understand more about this signals things like Harry_22 is doing. I want to understand how fzabkar is understanding how board is running without the Datasheet and Schematic. If anyone look from my side, i am so happy that i meet this two guys, who are helping me to broaden my views on Electronics. |
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