http://www.wiihacks.com/blogs/bad_ad84/ Wii Hacks, Wii Hacking, Mod Chips Friend Code Sharing and Nintendo Community en Wed, 22 May 2013 14:12:18 GMT vBulletin 60 http://images.wiihacks.com/images/misc/rss.jpg http://www.wiihacks.com/blogs/bad_ad84/ http://www.wiihacks.com/blogs/bad_ad84/298-another-faulty-wii-cause-found-fixed.html Wed, 05 Jan 2011 19:43:03 GMT Since repairing Wiis, both me and erikie have been wondering what causes a Wii to work over component and not work over composite (or the opposite). erikie first suspected it was the AV encoder and as I had to tools to remove and replace the chip with little hassle, it was upto me to try it. Well, nearly a year later I have actually found time to test this theory and its CORRECT! I have now repaired a board that wouldnt output over composite (and therefore not fit for resale). Here... Since repairing Wiis, both me and erikie have been wondering what causes a Wii to work over component and not work over composite (or the opposite).

erikie first suspected it was the AV encoder and as I had to tools to remove and replace the chip with little hassle, it was upto me to try it.

Well, nearly a year later I have actually found time to test this theory and its CORRECT!

I have now repaired a board that wouldnt output over composite (and therefore not fit for resale).

Here is a picture of the location of the chip when its removed:



Notice the large ground on the bottom of the chip, this can make removal difficult. Also when you replace it, you will need solder paste on the underside of the chip to reconnect this. ]]> Bad_Ad84 http://www.wiihacks.com/blogs/bad_ad84/298-another-faulty-wii-cause-found-fixed.html http://www.wiihacks.com/blogs/bad_ad84/196-fault-finding-wii-dvd-board-pcbs.html Sun, 18 Jul 2010 11:46:08 GMT I deal with a lot of Wii's - mostly bought from ebay... I tend to stick to black screen/bricked ones as I'm able to debrick them then I can sell everything in the Wii as parts and make a nice profit. However, there seems to be a lot more "can't read disk" faulty machines than black screened.

Although this means the motherboard will be fine (in most cases), this means theres less to sell (drive is broken) and also, the motherboards do not sell as well as drives. I assume this is because drives are easier to replace and easier to diagnose for the average DIY'er.

Today, I got a few drives with some weird errors, so I decided to do some investigation...

I have some drives that didn't spin up... now I've been doing this long enough to know you never assume anything.

So first thing to do was test the DVD PCB's separately from the chassis, this will tell you which half is broken.

The results were strange... switching over to a known working pcb caused the drive to spin again... this means the problem wasn't the motor but was on the actual PCB itself.

It seems that the Wii isnt detecting the disk and therefore isnt spinning, so after doing some investigation of datasheets and some googling I found theres a chip on the pcb "AN22023" this is a chip made by panasonic that detects media presence and directs the optical pickup to read the disk... This sounds exactly like my issue.

I removed this chip and replaced it with one from a board with another fault and... SUCCESS.

I will update with pictures when i get chance.


Now I just need to figure out whats causing this other board to spin the drive at max speed constantly... ]]> Bad_Ad84 http://www.wiihacks.com/blogs/bad_ad84/196-fault-finding-wii-dvd-board-pcbs.html