| Electronics > Repair |
| What more i can do? |
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| 222Lab_Test222:
--- Quote from: Harry_22 on November 07, 2024, 05:43:06 am --- --- Quote from: 222Lab_Test222 on November 06, 2024, 11:19:34 pm --- 10. Remove SIM1 (Dram). Switch on the computer and check for beep. Switch it off. Install both SIMs back. -There is no beep at all, BUT the screen is black although it is on and i see 1 or 2 unknown letters. 11. Remove IC40 (CGROM3). Switch on the computer and check for beep. -I am not sure how to remove this, shall i desolder? --- End quote --- What about the screen on non-working PC? Is it also on? Please check. Don't remove IC40. Sorry, I didn't see that there is no bed underneath. Please do the following on working machine: Remove Sim1 (Dram) and try to start it. PS Every time before a new manipulation, check that the machine is working. --- End quote --- After you requested, i am performing all tasks in working machine. In non working board screen, after i press on, It keeps beeping continuously, i do not see anything on the screen. It feels like screen is not even on. When SIM 1 is removed, Its just some blank screen. BUT if i swap SIM 1 and SIM 2 in same working board *the same board* there is beep, and if i just plug it out there is no beep. Its weird. |
| Harry_22:
--- Quote from: 222Lab_Test222 on November 07, 2024, 07:29:32 am --- After you requested, i am performing all tasks in working machine. In non working board screen, after i press on, It keeps beeping continuously, i do not see anything on the screen. It feels like screen is not even on. When SIM 1 is removed, Its just some blank screen. BUT if i swap SIM 1 and SIM 2 in same working board *the same board* there is beep, and if i just plug it out there is no beep. Its weird. --- End quote --- Do you mean here "non-working"? Could you perform the detailed description of Sim manipulation test on both working and non-working machines. PS Your board is as an alien artifact from a moon-digging machine. :) Now we're looking for some thread to grab onto and unravel the tangle further. |
| 222Lab_Test222:
--- Quote from: Harry_22 on November 07, 2024, 09:11:56 am --- Could you perform the detailed description of Sim manipulation test on both working and non-working machines. --- End quote --- SIM Manipulation 1. Working Board - When SIM 1 is removed there is just black screen. - When SIM 2 is removed there is some texts like date stuffs time on screen. - When I swap SIM 1 and SIM 2, i mean put SIM 1 in SIM 2 and vice versa, there is beep. 2. Non Working Board - There is beep, even i remove SIM 1 or SIM 2, I can't get the screen turn on. - Same even if i swap, no screen turn on, Only Beep. |
| 222Lab_Test222:
--- Quote from: Harry_22 on November 07, 2024, 09:11:56 am --- PS Your board is as an alien artifact from a moon-digging machine. :) Now we're looking for some thread to grab onto and unravel the tangle further. --- End quote --- If we can get hands on WACOM IC datasheet, then we can solve lots of issues BUT nope no datasheet. |
| Harry_22:
Could you remove both UV-EPROMs with DOS on working board and check it for beep. |
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