[G4] MDD beginning to freeze up

[Jay E. Krauss, Jr.]

	I had two of these computers; internal heat is apparently a 
real problem with them. I installed a number of different internal 
case fans, a fan over the processors, and even an industrial fan 
blowing against the back of the case. The inlet screen at the bottom 
front of the computer does tend to get covered with accumulated 
"fuzz", so you might check and see if that has happened.
	I really liked these computers when I could keep them 
running, with the two DVD drives, four internal hard drives, and 
expansion slots; however, I finally gave up and moved to dual core 
Xeon towers, which have many of the same advantages, but without the 
heat dissipation challenges.
Jay






>On Nov 14, 2009, at 1:17 AM, Bruce Ryan Nakamura wrote:
>
>>Hello,
>>
>>My G4 MDD with dual 1.25 Mhz processors that can boot up natively 
>>in OS 9 is recently beginning to freeze up upon boot up mostly in 
>>OS 9, in particular when I switch from Tiger to OS 9 and restart.
>>
>>I switched to my back-up external drive and got the same freezing 
>>problem. Zapping the PRAM didn't solve the problem. Do I have a 
>>hardware problem?
>
>Your mileage may vary, but this is the same behavior my MDD (same 
>specs as yours) exhibited a couple of weeks before my processor card 
>went up in smoke. Hindsight tells me that I should have pulled the 
>heat sink off, cleaned the old thermal paste off, and apply new 
>paste. After the unfortunate event, I did a postmortem and found 
>old, dried out thermal paste that couldn't have possibly been 
>effective anymore.
>
>This is not to say for sure that this is what's happening to your 
>machine. I just wanted to share my experience for you and perhaps 
>give you something to try that may be effective.
>
>Brian
>
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