I'm posting here hoping some XBox guru out there will know the answer to my question:
**broken link removed**
**broken link removed**
In the first image you can see that I have desoldered the 200V cap and near the top you can see signs of burning. The item marked VA2 which I believe is a MOV (metallic Oxide Varistor) is pictured below in pieces. This was removed from the heatshrinking ....all I can see in the number 10....
Best guess is that it is a 100-110V, 4-5A MOV.
You can also see in the first image that I have replaced the fuse with a fuse holder
Ohh yea - a buddy brought this over for repair, as someone in his house plugged the 110V XBox into 240V mains :blink:
Edit: Click **broken link removed** to see step by step images of what I did....
Generally, these MOV's are used in like pairs -- one on each leg of the AC input. See if there isn't another one there somewhere (VA1, maybe?), and if so, remove the HST from it to get the info printed on the MOV.
Be sure to check the FWBR before returning the unit to service...
Thank you- Chris here helped me find a matching NTC Thyristor and I'll be replacing this if the PSU fails after I've replaced both varistors and the 200v cap (which has suffered a bit of overvoltage - 617uF on my fluke). I tried to test the thyristor and it's reading was about 2.5ohm and the colder I made it, I noticed a large swing...
extremely sorry, Bill, Thanks for the hint.
i was in fact searching for some clues of xbox psu, like a service manual etc
i did a mistake in not watching the date of the previous post.
extremely sorry ....