[amayausers.com] Re: timing problems, i think. please help

  • From: theboards@xxxxxxxxxxxxxx
  • To: amayausers@xxxxxxxxxxxxx
  • Date: Fri, 4 Jun 2010 05:04:21 UT

This message was posted by EEAmayaTech on AmayaUsers.com. PLEASE DO NOT REPLY 
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assuming nothing is working now and if the smell is coming from underneath the 
cover it is most likely due to a overheated chip on the motherboard. I've delt 
with burnt chips on the Z motor, Y Motor, and color change motor. U can confirm 
this by removing the motherbboard and visually inspecting the board. 1st run ur 
hands on the bare metal casting or EMC shield to discharge any static 
electricity in ur hands. I believe there r 17-3mm screws and 6 posts securing 
the board. While removing the screws get a feel for how tight they r so as not 
too overtighten when reinstalling. Using a marker, mark on the board which 
holes the posts r in and any un used connectors so it will b easy to reinstall. 
Maybe take a digital picture to reference later. All the connectors r 
pok-e-oked and can only b installed one way. There is a small guide on each 
side of the black connectors. b careful when removing the connectoers. Avoid 
pulling on the wires. Use a small screw driver to help delatch one 
 side of the connector at a time. B gentle, u do not want to break the mating 
connector solder joint to the motherboard by wiggling too much. Remove the 
board and look underneath. The X,Y, AND Z DRIVER FETS r underneath the board. 
they rest on Foam heat sinks. When the FETs overheat they melt the  foam 
heatsinks and really stink up the joint. On the top of the board there r labels 
(x,y,z) near the driver FETs. When reinstalling a board always work from center 
out and tighten each screw a little at a time. also b4 u reinstall a board make 
sure there r insulating washers between the board and casting at each of the 
mounting holes.
  Let us know what u find.
  TJ.

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