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bender · 22 January 2021, 07:53

Hello again

Today I had a chance to continue with this. There is anothe issue that bothers me and it is that the LED for the internal speaker is always on, regardless of the speaker switch. The speaker does reproduce sound (or not) depending on the switch, but the LED does not care, it remains on all the time.

While testing for this, I noticed that there is only 16.9 ohms resistance between the 5V rail and Ground. Sounds low to me. The multimeter in continuity mode even beeps when I test 5V and Ground, and not a short beep that quickly stops. It can continue forever apparently.

Isn't that a short between 5V and GND? If so, how come the computer can boot and apparently works fine? (except the zorro problems I mentioned above, of course)

What am I missing here?

Thanks!
- Efrén

22 January 2021, 07:53	#8
bender Registered User Join Date: Oct 2018 Location: Queretaro, Mexico Posts: 10	Hello again Today I had a chance to continue with this. There is anothe issue that bothers me and it is that the LED for the internal speaker is always on, regardless of the speaker switch. The speaker does reproduce sound (or not) depending on the switch, but the LED does not care, it remains on all the time. While testing for this, I noticed that there is only 16.9 ohms resistance between the 5V rail and Ground. Sounds low to me. The multimeter in continuity mode even beeps when I test 5V and Ground, and not a short beep that quickly stops. It can continue forever apparently. Isn't that a short between 5V and GND? If so, how come the computer can boot and apparently works fine? (except the zorro problems I mentioned above, of course) What am I missing here? Thanks! - Efrén