| Electronics > Repair |
| What more i can do? |
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| 222Lab_Test222:
--- Quote from: Harry_22 on November 19, 2024, 06:33:21 am --- So try to unsolder RTC chip. Thus we disconnect Pin 11 which generates pulses with 64 Hz frequency. There are a lot of D4990A on Ali. Just raise 11 pin as I wrote but literally by half a millimeter. --- End quote --- The thing is i do not understand what will happen if i desolder, will it only not send signals to TP? |
| 222Lab_Test222:
--- Quote from: Sorama on November 19, 2024, 06:52:52 am ---Maybe you can follow the beeper signal to know what it triggers and thus understand the conditions and analyze those conditions ? --- End quote --- Can you give some hints and explanations? |
| 222Lab_Test222:
--- Quote from: Harry_22 on November 19, 2024, 06:33:21 am ---Just raise 11 pin as I wrote but literally by half a millimeter. --- End quote --- Here it is, The Pin is raised The second image is the signal of TP1 non working board after RTC TP raised... |
| Sorama:
--- Quote from: 222Lab_Test222 on November 19, 2024, 07:07:07 am --- --- Quote from: Sorama on November 19, 2024, 06:52:52 am ---Maybe you can follow the beeper signal to know what it triggers and thus understand the conditions and analyze those conditions ? --- End quote --- Can you give some hints and explanations? --- End quote --- If you know (electrically) what drives the beeper and in the end which transistor/ processor pin, it may help you understand the prerequisites/conditions for the beeper and thus why it is beeper. Just follow the signal of the beeper. |
| fzabkar:
--- Quote from: Harry_22 on November 19, 2024, 06:33:21 am ---Thus we disconnect Pin 11 which generates pulses with 64 Hz frequency. There are a lot of D4990A on Ali. Just raise 11 pin as I wrote but literally by half a millimeter. --- End quote --- Pin 11 of the RTC is open drain, so it can be safely shorted to ground. Will this do what you want? |
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