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Re: Jaycar.

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On 29/05/2022 4:10 pm, Trevor Wilson wrote:
> On 29/05/2022 11:29 am, keithr0 wrote:
>> On 29/05/2022 6:52 am, Trevor Wilson wrote:
>>
>>> **My experience with Jaycar plugpacks is not as stellar. I worked on 
>>> a project for a client a few years back and I purchased 600 X 15VAC, 
>>> 300ma plug packs from Jaycar. After a few months in the field they 
>>> began failing (the absolute maximum current drawn was 100ma). When 
>>> 10% if the plugpacks had failed, I sourced new plugpacks from an 
>>> Australian manufacturer. These were rated at 16VAC, 100ma. To date 
>>> (and it has been 25 years) I've had to supply 3 replacements.
>>>
>>> A 10% failure rate is appallingly bad. A 10% failure rate in a period 
>>> of a few months is simply unforgivable.
>>
>> Have you not heard of the "Bathtub" curve of reliability? Over a large 
>> number of components, the failure rate is high early on, then it falls 
>> to a lower steady level rising again when the component reaches EOL. 
>> We used to deal in 10s of thousands of hard disks, and the effect was 
>> very noticeable.
> 
> **So, I take that you consider a 10% failure rate in the first half of 
> your bathtub curve is acceptable?

Not good but I've seen such major issues with gear from well known 
manufacturers over the years.

> I do not. It is completely unacceptable.
> 
> Back when I worked at Marantz, the Model 1070 was quite reliable and 
> used several hundred individual components. The failure rate was 0.5% 
> within the 3 year warranty period.
> 
> And, to underline the reliability thing, the device that the plugpack 
> was used with consisted of a microprocessor, 2 line LCD display, a NiCad 
> battery pack and a few dozen support components, including NiCad 
> charger. Only one was returned for repair and that turned out to be a 
> fault with the 128 strand, silicone wire leads that was connected to the 
> outside world.

All that in a plugpack?

> Yet, Jaycar plugpacks exhibited a 10% failure rate. Their replacement 
> packs (which cost more) were made in Australia and have exhibited a far 
> greater reliability.

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Jaycar. keithr0 <user@account.invalid> - 2022-05-26 17:03 +1000
  Re: Jaycar. Sylvia Else <sylvia@email.invalid> - 2022-05-26 18:51 +1000
    Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-27 05:01 +1000
      Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-27 08:27 +1000
      Re: Jaycar. keithr0 <user@account.invalid> - 2022-05-27 11:49 +1000
      Re: Jaycar. Clocky <notgonna@happen.com> - 2022-05-27 13:23 +0800
        Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-27 16:30 +1000
          Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-27 21:19 +1000
            Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-28 16:05 +1000
              Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-29 04:54 +1000
                Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-29 06:52 +1000
                Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-29 07:31 +1000
                Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-29 07:56 +1000
                Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-28 15:28 -0700
                Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-29 08:28 +1000
                Re: Jaycar. "Gary R. Schmidt" <grschmidt@acm.org> - 2022-05-29 15:30 +1000
                Re: Jaycar. keithr0 <user@account.invalid> - 2022-05-29 11:29 +1000
                Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-28 18:33 -0700
                Re: Jaycar. keithr0 <user@account.invalid> - 2022-05-29 15:48 +1000
                Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-29 00:12 -0700
                Re: Jaycar. Xeno <xenolith@optusnet.com.au> - 2022-05-29 17:26 +1000
                Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-29 02:07 -0700
                Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-29 16:10 +1000
                Re: Jaycar. keithr0 <user@account.invalid> - 2022-05-29 19:28 +1000
                Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-30 07:05 +1000
                Re: Jaycar. Daniel65 <daniel47@eternal-september.org> - 2022-05-29 21:12 +1000
                Re: Jaycar. Daniel65 <daniel47@eternal-september.org> - 2022-05-30 19:33 +1000
                Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-30 19:49 +1000
                Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-30 19:44 +1000
                Re: Jaycar. Daniel65 <daniel47@eternal-september.org> - 2022-05-31 19:15 +1000
          Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-27 16:15 -0700
          Re: Jaycar. Clocky <notgonna@happen.com> - 2022-05-28 09:01 +0800
            Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-27 18:51 -0700
              Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-05-28 00:30 -0700
                Re: Jaycar. Trevor Wilson <trevor@rageaudio.com.au> - 2022-05-28 18:11 +1000
                Re: Jaycar. Clocky <notgonna@happen.com> - 2022-06-24 09:40 +0800
                Re: Jaycar. Phil Allison <pallison49@gmail.com> - 2022-06-23 20:03 -0700
    Re: Jaycar. "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-27 08:25 +1000

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