I agree. I have a number of the ZM1000's. Before this purchase I could
bin them into good and worn. These tubes are all marginal but in different
ways. For example, picture an "8" and figuratively vertically bisect the
"8". The left most portion was fine, the right most portion was completely
dark with graduation in between. The same was true of the "4" but reversed
handed. The rest of the numbers were fine. Another tube has it's brightly
lit "0" tilted about 10 degrees, leaning to the right. The rest of the
numbers are fine. Within the same tube, some of the digits are unnaturally
bright, others dim. And so on. A set of them has been cycling now for
several months with no change in either the brightness or poisoning. I did
not take the time to measure the drive current. The malady follows the
tube not the fixture installation position. They do work, if working is
defined by readily identifying the active digit. The $15 each price I paid
is probably appropriate.
On Saturday, February 11, 2023 at 2:12:32 PM UTC-6 Nicholas Stock wrote:
> Hmm, that's odd. I've never seen that in a ZM1000, but maybe I've not been
> looking hard enough..... I'll check my stash then!
>
> On Sat, Feb 11, 2023 at 11:44 AM Neil QQ <[email protected]> wrote:
>
>> Amperex ZM1000 (clear glass).
>>
>> On Sat, Feb 11, 2023 at 12:10 PM Nicholas Stock <[email protected]>
>> wrote:
>>
>>> What type of tubes were they Neil?
>>>
>>> On Sat, Feb 11, 2023 at 7:37 AM Neil QQ <[email protected]> wrote:
>>>
>>>> Thank you. I bought 12 tubes from this vendor a few months ago. Out
>>>> of the 12, three had serious poisoning on certain digits and one was dead.
>>>>
>>>> The vendor was responsive ,quickly giving me credit (including prorated
>>>> shipping). I have no reason to doubt the tubes are brand new. They were
>>>> commercial bespoke bulk packaged, pristine in appearance, and had the
>>>> classic little Styrofoam pin protector pillow. It was only after I
>>>> installed them on a test fixture that I noticed the tube-to-tube and the
>>>> same tube digit-to-digit brightness vary a lot. Additionally, most of the
>>>> tubes have at least one digit that is physically crooked or tilted.
>>>> Without knowing any better, I bet these are factory "seconds"; culls from
>>>> production that are serviceable but don't meet specification. I can't
>>>> really complain. The price was too good to be true, the vendor was
>>>> responsive, and the vendor's description was accurate.
>>>>
>>>> I am just curious to hear about another experience.
>>>>
>>>> On Friday, February 10, 2023 at 11:13:02 PM UTC-6 Kevin A. wrote:
>>>>
>>>>> Never, but based on my ebay experience (about 10 years of regular
>>>>> buying and selling), his account is about 24 years old and has excellent
>>>>> feedback.
>>>>>
>>>>> I would not hesitate if interested in an item.
>>>>>
>>>>> On Fri, Feb 10, 2023, 9:20 PM Neil QQ <[email protected]> wrote:
>>>>>
>>>>>> Anybody know or transacted with this vendor?
>>>>>>
>>>>>> https://www.ebay.com/itm/144862333148
>>>>>>
>>>>>>
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