AlaskaCC Posted December 23, 2021 Report Share Posted December 23, 2021 I have several boards (1.0, 1.1 & 1.4) that will not power up with a known good power supply. Capacitors all look good and there are no visible signs of damage or component failure anywhere. Are there typical failure points that I should check? Would it be worth it to replace the power caps anyway? Thanks for any help. I hate to ditch these boards or just use them for parts. Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted December 24, 2021 Report Share Posted December 24, 2021 The 1st thing I would check is trace damage. If you test the 2 points on the IC in this pic you should get 3 volt then test the 2 points next to the white scocket and you should have 3 volt if there is no reading on the IC then add 2 links by joining the 2 light blue and the 2 purple points. 1.0 -1.1 below Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. 1 Quote Link to comment Share on other sites More sharing options...
AlaskaCC Posted December 26, 2021 Author Report Share Posted December 26, 2021 There was no voltage reading on the IC, although I have 120V at the power supply. So if I understand correctly, you are suggesting that I solder a connecting wire from the IC light blue pin to the light blue point near the power/eject button and same for the purple. Is that right? Is it okay to use Kynar wire for that? Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted December 26, 2021 Report Share Posted December 26, 2021 1 hour ago, AlaskaCC said: Is it okay to use Kynar wire for that? Yes Can you test for power at the 12 pin (1.0-1.1) and 20 pin (1.2-1.4) The PowOk wire should have around 3 volt The brown (1.0-1.1) should have 3.3 volt and there should be a 3.3volt STB on the 1.2-1.4 version Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
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