Chosen Solution
hi, i need to repair a logic board and i need some help ;) 1_ Caracteristics and where can i buy the diode with 74 wrote on it ? 2_ caracteristics and where can i buy the white fuse or diode ? ( circled on the picture as white ) 3_ i have a mark in the board … what is this and if it s a big problem ? ( circled on the picture as red ) someone can help me ? best regards
Update hi, where can i find the motherboard number ? and here more picture … diode 74 i need … and the mark near the lcd conector …
Update where can i find the number on motherboard ?
david, let me try this gain, since you posted new images and apparently it was felt that I gave you the wrong answer. My answer was originally based on your first image. So, to clear it up, I labeled your new image and identified the parts. From your images the motherboard appears to be a 820-2530. The schematic and layout is based on this and is a perfect match.
Number 1 on your image shows (in your case it does not show;-) the location for the Diode “74”. That diode is D9701 SOD-123 RB160M-40. The RB160M-40 Series 40 V 30 µA Surface mount Schottky Barrier Diode available in SOD-123 Package. The datasheet for that diode is here. I do not know your geographical location, so I would check mouser.com or digikey.com as well as many others. Number 2 on your image is of course the previously identified capacitor C9796 200PF 5% 100V CERM 1206 a Kemet CDR32BP201BJYS has those values. Again, you could check on Mouser.com or digikey.com as well as many other places. Number 3 on your image shows interrupted/broken traces.
It appears that they are part positive and negative polarity of your data lines. Depending on the damage, you may have to get the schematic of your connector and run some jumpers.
Make that decision when you are ready to re-evaluate your repair. Hope this helps, good luck.
