Re: Anyone else seen this.

On 06/07/2026 13:01, tony sayer wrote:
> In article <[email protected]>, jkn
> <[email protected]> scribeth thus
>> On 04/07/2026 22:05, tony sayer wrote:
>>> In article <[email protected]>, alan_m
>>> <[email protected]> scribeth thus
>>>> On 03/07/2026 16:21, The Natural Philosopher wrote:
>>>>> Recently my router (Draytek 2726) has been spontaneously rebooting.
>>>>>
>>>>> Examination of the logs show a kernel panic caused by 'attempt to
>>>>> execute an illegal instruction'.
>>>>>
>>>>> My assumption, possibly erroneous, is that the actual firmware code is
>>>>> corrupted
>>>>> The router is rated only to +45°C but that is the recommended limit for
>>>>> flash memory, and the room temperature has been up towards 40°C. which
>>>>> doesn't leave a great deal of margin for router internal heat production.
>>>>> My query is whether anyone else has seen issues with flash memory in the
>>>>> recent hear wave.
>>>>>
>>>>> Surely phones get hotter than this?
>>>>>
>>>>> Genuinely interested in other's experiences.
>>>>>
>>>>
>>>> Not router or flash memory but I had experience of set top boxes
>>>> overheating and becoming unreliable usually because the feet they fit to
>>>> the boxes only allows a few millimetres of air to circulate under the
>>>> box. I've often fitted taller feet and/or put the boxes on a a couple of
>>>> pieces of 2"x1" timber to increase the air flow beneath the box. Also I
>>>> don't stack one box on top of another that may be generating heat nor
>>>> operate the boxes in an enclosed cabinet.
>>>>
>>>
>>> And.. change the mostly useless power supply Capacitors!..
>>
>> Is this actually true, specifically referring to Draytek routers? Or
>> just to Set Top Boxen (in which case I probably agree)
>>
>> I have previously looked for reports of such problems with Draytek kit,
>> and found none. I also took a look inside my previous Draytek router
>> (when I was getting ADSL issues, see uk.d-i-y thread passim) and all the
>> caps looked good (visual only check, I agree)
>>
>>
>>
> 
> More or less any consumer grade switch mode power supply! The Draytek in
> question was a, can't remember the blinking number but was a rack
> mounted jobby.
> 
Mine has a wall wart.  Don't think its a switched mode johnny.


> Had a TV the other day the caps after the rectifier where shot oddly
> enough read fine on a PEEK Cap tester but a couple of new 105 deg ones
> sorted that.
> 
> And for that matter any test gear of a certain age, power supply caps
> change them they don't last forever!..
> 
Indeed. I had a valve radio from the 1950s that needed a new cap on the 
main HT supply.


-- 
Future generations will wonder in bemused amazement that the early 
twenty-first century’s developed world went into hysterical panic over a 
globally average temperature increase of a few tenths of a degree, and, 
on the basis of gross exaggerations of highly uncertain computer 
projections combined into implausible chains of inference, proceeded to 
contemplate a rollback of the industrial age.

Richard Lindzen