noz1380 Posted October 6, 2022 Report Share Posted October 6, 2022 I have a crystal xbox that has been running fine with a x3 chip, I believe its a 1.4 with a Focus video chip. I flashed the bios and set it up for a 2tb hard drive and all was fine. I have stripped the xbox down, cleaned everything, removed the heat sinks, cleaned and added new thermal paste. After rebuilding the xbox it fires up, 3x green blinks between power down then sits flashing red/green. It does the same if I have the x3 in or not. Have I damaged the board while handling? I have checked the chip soldering and D0, cleaned and re-flowed/re-soldered. But it still behaves the same. Any ideas/advice? Quote Link to comment Share on other sites More sharing options...
dtomcat Posted October 6, 2022 Report Share Posted October 6, 2022 Are you sure the chip is sitting on the correct pins? (Alignment) Quote Link to comment Share on other sites More sharing options...
dtomcat Posted October 6, 2022 Report Share Posted October 6, 2022 Does it boot without the chip? Quote Link to comment Share on other sites More sharing options...
KaosEngineer Posted October 7, 2022 Report Share Posted October 7, 2022 How much thermal paste did you use? Does it display anything on the TV set? If so, is there a number in the upper left-hand corner of the screen? Is the D0 point on the motherboard connected directly to ground or to the D0 signal from the X3 modchip? Quote Link to comment Share on other sites More sharing options...
noz1380 Posted October 7, 2022 Author Report Share Posted October 7, 2022 (edited) So it behaves the same with or without the chip. No display going to the tele. I put a reasonable amount on. I have removed the heatsinks, cleaned and re-applied thermal paste. I have re-flowed all the solder again on the bottom pins, and removed, cleaned and re-soldered the D0 too. The D0 is to the x3, not ground. It still behaves the same, with or without the x3 Edited October 7, 2022 by noz1380 Quote Link to comment Share on other sites More sharing options...
dtomcat Posted October 8, 2022 Report Share Posted October 8, 2022 Best to take some pics so we can see board Quote Link to comment Share on other sites More sharing options...
noz1380 Posted October 8, 2022 Author Report Share Posted October 8, 2022 Not sure if Goggle Drive will share ok?? https://drive.google.com/drive/folders/15vkhfX59v8a5TE-i0o2c74tXZGuUHjfg?usp=sharing Quote Link to comment Share on other sites More sharing options...
KaosEngineer Posted October 9, 2022 Report Share Posted October 9, 2022 The LPC pin header soldering needs to be reflowed. Don't add any more solder just reheat the pin and pad so the solder flows around the pin into the hole to make a better connection. Quote Link to comment Share on other sites More sharing options...
Bowlsnapper Posted October 9, 2022 Report Share Posted October 9, 2022 Not that I actually consider my input to be valuable, but I agree with Kaos. Those solder joints are all pin and no pad, player. Quote Link to comment Share on other sites More sharing options...
noz1380 Posted October 9, 2022 Author Report Share Posted October 9, 2022 I'll desolder with my sucker. I did this mod 15/20 Years ago. I can do better than this tbh. thank you for the input. Quote Link to comment Share on other sites More sharing options...
noz1380 Posted October 9, 2022 Author Report Share Posted October 9, 2022 Even after sucking up the old solder and reflowing/re soldering and doing a better job, it's still behaving the same.... https://drive.google.com/drive/folders/1--HFoa0eXDbSx0Dy8u7VD6xMk7acxj67 Quote Link to comment Share on other sites More sharing options...
Prehistoricman Posted October 9, 2022 Report Share Posted October 9, 2022 Is this the first time the heatsinks were removed? Did you apply a lot of force to remove them? Any crunching noises? Quote Link to comment Share on other sites More sharing options...
noz1380 Posted October 9, 2022 Author Report Share Posted October 9, 2022 1 hour ago, Prehistoricman said: Is this the first time the heatsinks were removed? Did you apply a lot of force to remove them? Any crunching noises? The cpu came off fine, the gpu was a pain. I warmed it a little and it released. Tho I did have to use a spludger to leaver the retainer off. Quote Link to comment Share on other sites More sharing options...
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