Severe problem with PureSignal

K1LSB
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Re: Severe problem with PureSignal

Postby K1LSB » Thu Aug 31, 2023 2:53 pm

Yup, gonna do that next. I was even thinking I might swap a few of the internal jumper cables' respective positions (if cable length allows), that way if any cable is bad then something else in the rig's operation would likely also change (besides PS). ;)

Mark
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Ernie
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Re: Severe problem with PureSignal

Postby Ernie » Fri Sep 01, 2023 11:00 am

When I bought my 7000dle new in 2017 it had a similar issue right out of the box. I sent it to Doug and he found a relay that did not have all its pins soldered. He fixed it and its been working great ever since.

W2FMU
Last edited by Ernie on Thu Sep 14, 2023 11:15 am, edited 1 time in total.
K1LSB
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Re: Severe problem with PureSignal

Postby K1LSB » Tue Sep 05, 2023 12:22 pm

So I finally got a block of free time this weekend and pulled the rig apart, swapped a couple of cables (probably not related to PS), checked all connections for tight and buttoned everything back together and fired it up.

No difference in PS behavior on 20 meters.

Even tried a brand new i9-13980HX laptop, same behavior.

Unless anyone has any other ideas, I'm almost forced to concede it's probably a hardware problem in the radio.

Mark
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w-u-2-o
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Re: Severe problem with PureSignal

Postby w-u-2-o » Tue Sep 05, 2023 12:55 pm

Sure sounds like it.
vk1hx
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Re: Severe problem with PureSignal

Postby vk1hx » Tue Sep 05, 2023 11:59 pm

I'll take it...
73, Phil - VK1HX
W4WMT
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Re: Severe problem with PureSignal

Postby W4WMT » Wed Sep 06, 2023 10:31 am

Take what?
vk1hx
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Re: Severe problem with PureSignal

Postby vk1hx » Wed Sep 06, 2023 12:10 pm

W4WMT wrote:Take what?


Hehe, Bryan.. I was preempting that if it might get tossed? I'd take it.. :)
73, Phil - VK1HX
K1LSB
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Re: Severe problem with PureSignal

Postby K1LSB » Tue Sep 12, 2023 2:07 pm

I've contacted Doug, he said to send the radio to him, he's very interested in seeing what's going on.

Thanks for everyone's help,

Mark
K1LSB
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Re: Severe problem with PureSignal

Postby K1LSB » Fri Sep 29, 2023 1:36 am

Update: Doug found a bad PA final in my radio, he replaced both finals and PS is working fine now on all bands.

Here's PS on 20 meters at 41 watts, internal sampler (curves are very similar at any power):

Capture.jpg
Capture.jpg (58.31 KiB) Viewed 9343 times

Thanks to everyone in this thread who offered their assistance.

Mark
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w-u-2-o
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Re: Severe problem with PureSignal

Postby w-u-2-o » Fri Sep 29, 2023 9:47 am

Great news! :)
ct1iqi
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Re: Severe problem with PureSignal

Postby ct1iqi » Sun Oct 01, 2023 12:07 pm

as the difference between 20 m and the other bands is rather extreme, have you considered checking the filters that are in the transmit path? As a dummy load is used that would not discriminate between bands, nor does the firmware. But a faulty filter could, or a filter switch not happening and the wrong one being active.
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W1AEX
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Re: Severe problem with PureSignal

Postby W1AEX » Sun Oct 01, 2023 4:28 pm

I've been following your journey with this in the thread Mark and very glad that Doug was able to isolate the bad PA device as the issue. That's not a common point of failure with these rigs so you got bit by a rare one! We are very lucky to have Doug as our backstop for these issues when they come up.

73, Rob W1AEX
"One thing I am certain of is that there is too much certainty in the world."

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