Re: Transwarp GS freezes

[Michael J. Mahon <mjmahon@aol.com>]

STYNX <stynx@gmx.de> wrote:
> http://s7.directupload.net/file/d/3000/426v82aq_jpg.htm
> There had been only two minor mods on the TWGS itself: one pin on a
> SMD-IC had been lifted and soldered to a resistor and two pins on another
> SMD-IC are soldered together. These mods where there from the start. 
> Right now Im getting more fixed on the capacitors since the card shows
> typical "cool-down" effects. The Card works for 5-6 minutes if plugged in
> after about 1h of cool-down. As soon as the System is crashed, the card
> gives various 30x and 40x errors each time.

I would not expect bypass capacitors to show such effects. 

More likely, a cracked trace, via, or solder joint is being affected by
thermal expansion. Alternatively, heating is causing chip time delays to
increase slightly, eroding timing margins.

Do you have a cooling spray that you can direct selectively?  This can help
locate thermal intermittents. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon