A3000 U202, U203, U701, U714 Replacement

Brosol · 08 May 2010, 23:28

Does anyone know a active supplier of low heat replacements for A3000 chips U202, U203, U701, U714.

My A3000 after approx 45+min of heavy CPU tasks (playing MP3 in high quality mode via Deneb/PIO USB Sound Card) will freeze or have Read Block errors.

Things will be ok after shutown, cool down. I've added & played with various combo configs: heatsinks, blower fans, higher CFM PSU fan just resulted in the delay of the symptoms. U701, U714 chips esp get very hot.

Loedown · 09 May 2010, 12:02

All those chips are programmed, which means that the parts will be the same or from the same source, heatsinks / fans are really your only options.

Cryogenics may be an option

rkauer · 10 May 2010, 00:02

Anthony Hoffman have those for sale.

Also anyone with an GAL/PAL programmer can do the job for you, as the sources are freely distributable from Dave Hayney archives.

alexh · 10 May 2010, 09:33

I imagine you are unlikely to find different technology versions of any of those chips though?

Perhaps you should examine your PSU (under load) and see if the voltages are within specification? If they are slightly too high it might account for excessive temperatures.

Brosol · 11 May 2010, 20:50

Thanks everyone, I emailed Anthony Hoffman and placed an order for the replacement chips.

The problems are getting worse, now it takes only 15min max after powerup doing nothing (no heavy cpu load) for the A3000 to become unstable, crashing.

I hope the GAL chips will fix this. I will check the voltage levels as well.

alexh · 12 May 2010, 08:19

Might be worth using some heat sinks & thermal compound? If heat is the problem this should fix it.

08 May 2010, 23:28	#1
Brosol Brosol Join Date: Jan 2010 Location: Vancouver, BC, Canada Posts: 85	A3000 U202, U203, U701, U714 Replacement Does anyone know a active supplier of low heat replacements for A3000 chips U202, U203, U701, U714. My A3000 after approx 45+min of heavy CPU tasks (playing MP3 in high quality mode via Deneb/PIO USB Sound Card) will freeze or have Read Block errors. Things will be ok after shutown, cool down. I've added & played with various combo configs: heatsinks, blower fans, higher CFM PSU fan just resulted in the delay of the symptoms. U701, U714 chips esp get very hot.

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09 May 2010, 12:02	#2
Loedown Precious & fragile things Join Date: Feb 2009 Location: Victoria, Australia Posts: 1,946	All those chips are programmed, which means that the parts will be the same or from the same source, heatsinks / fans are really your only options. Cryogenics may be an option

10 May 2010, 00:02	#3
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Anthony Hoffman have those for sale. Also anyone with an GAL/PAL programmer can do the job for you, as the sources are freely distributable from Dave Hayney archives.

10 May 2010, 09:33	#4
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	I imagine you are unlikely to find different technology versions of any of those chips though? Perhaps you should examine your PSU (under load) and see if the voltages are within specification? If they are slightly too high it might account for excessive temperatures.

11 May 2010, 20:50	#5
Brosol Brosol Join Date: Jan 2010 Location: Vancouver, BC, Canada Posts: 85	Thanks everyone, I emailed Anthony Hoffman and placed an order for the replacement chips. The problems are getting worse, now it takes only 15min max after powerup doing nothing (no heavy cpu load) for the A3000 to become unstable, crashing. I hope the GAL chips will fix this. I will check the voltage levels as well.

12 May 2010, 08:19	#6
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	Might be worth using some heat sinks & thermal compound? If heat is the problem this should fix it.

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