On 19.11.14 14:02, Brian May wrote:
On 19 November 2014 13:34, Morrie Wyatt <morrie@morrie.id.au> wrote:
Also, how "Cold" are we talking about here?
Not really that cold. Say, at rough guess, anything less then 15 degrees. Will try to take a look at the temperature next time I turn it on.
Can't say what is causing it, but my machine also malfunctions at slightly lower temperatures than that, around 8°-12°C. Often booting hangs, but hitting the reboot button after it has internally warmed for a minute always brings it up - so far. Even during that second boot, video can tear horizontally in dramatic fashion - something which never happens when it's warm. In my case, a common cause could be that the ESR of the supply bypass electrolytics is marginal (low ESR caps cost more), and is sufficiently worse at low temperatures (OK, that's an assumption, but aluminium electrolytics have a wet electrolyte) to allow disruptive power supply noise. A higher ESR will lead to more rapid warming of those exposed to high frequency power supply switching ripple, and would be symptomatic of the rapid recovery I observe. That's 5% observation, and 95% speculation, so any other theory is as good. Erik -- Melbourne Water Use: "More water is lost to stormwater each year than we use. On average we use about 40 billion litres of water each year, and each year about 500 billion litres runs into our drains." Leonie Duncan, Environment Victoria healthy river campaigner, quoted on p7 of Journal 21.10.08. But what the heck, with the N-S Pipeline, we can take water from the foodbowl.