68kMLA Classic Interface
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| Click here to select a new forum. | | TDA4605 voltage not stable on pin 6 | Posted by: makkuss2000 on 2023-10-27 00:02:58
Hello to everyone, i'm having a strange problem on voltage for TDA4605... when i measure the voltate in AC on pin 6, the value go up and down from 10 to 20 and from 20 to 10 so it's not stable.... in fact after boot the mac, on screen gave me an horizontal line.....
I changed this IC (TDA4605 and also the CY17G-3) and i recapped everything.... in the beginning the mac was working very well but i heared also a strange noise like a buzz came from the analog board (i didn't gave importance because i thought was normal) but after 10 minutes, i got an horizontal line on screen ....and while i was searching the problem, i noticed that on TDA4605 the voltage goes up and down (not stable on 12VAC).
All voltages are correct 12V -12V and 5V.
What could be the problem? | Posted by: bigmessowires on 2023-10-27 10:27:57
What power supply or Macintosh model is this? I'm guessing maybe a Macintosh Classic? | Posted by: makkuss2000 on 2023-10-27 13:04:19
What power supply or Macintosh model is this? I'm guessing maybe a Macintosh Classic? yes mac classic | | 1 |
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