Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 13, 2020 12:05:52 GMT
It seems that my coax cable has aged, cracked and let water in. the receiver PCB pictured here looks like it has let water in -  linkWhat do you think the chances of a clean up will have in fixing this? It still works, but LNB1 has a low signal strength compared to LNB2. LNB1 is in the big silver box. I could replace the PCB, but at €100 it is only €30 less than a complete box. I bought the Foxsat HDR in about 2009/2010, so throwing €100 at it for something else to fail soon may not be wise. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 13, 2020 12:20:14 GMT
I'd replace it with a new one. As you say, throwing €100 at it is probably not as good as replacing it with a new one which will likely better it anyway.
|
|
|
|
Post by firebottle on Apr 13, 2020 14:27:59 GMT
As you have the board out I would get a stiff brush, an old toothbrush, and try to brush the rust of the pcb.
Probably go as far as removing the lid of the front end and doing in there as well.
Nothing to loose?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 13, 2020 15:33:37 GMT
Done that.
I used a bit of liquid as well, and have dried it off.
If I could find a new twin coax connector of the right type, I think I could salvage the box.
I think there is corrosion in it, which is causing a signal loss.
|
|
|
|
Post by firebottle on Apr 13, 2020 15:38:10 GMT
They are called 'F' connectors if that helps.
They are cheap and nasty RF connectors so I usually call them something longer beginning with f.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 13, 2020 15:50:31 GMT
Thanks Alan. I am aware of the name, but I cannot find the correct twin through hole connector.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 14, 2020 11:25:00 GMT
There seems to be a shortage of replacement boxes at a sensible price at the moment.
Any idea of how I can clean out the type F female connector?
I am tempted to replace just the “LNB 1 in “ with a suitable connector. I assume that the silver casing is an EMI shield?
|
|
|
|
Post by firebottle on Apr 14, 2020 12:37:29 GMT
Yes it is a shield with the IF circuitry inside it. Have you had the top off?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 14, 2020 12:57:49 GMT
Yes. I cleaned up the PCB hiding within.
It looks like water had sat in there for awhile.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 15, 2020 8:24:38 GMT
Measured the resistance across the F connectors on the box. They read 0 ohms using the most sensitive scale on my multimeter.
That would suggest that the problem is not the connector, but it likely to be a small smd component.
Replacement looks like 5he best option, but prices for the boxes are ridiculous at the moment.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2020 19:32:38 GMT
Looks like it is going to be scrap.
No spares seem to be available. I am thinking of fitting a sat tuner in my fanless music server, and making it into a HTPC.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 17, 2020 16:33:15 GMT
I have replaced the coax with Webro WF100 (a foam filled, copper coax) and the Humax is still dead.
I can’t find a replacement tuner board, but I have installed an old ZGemma H2S I had lying around with a Freesat image now installed.
It is doing the job. I think I will wait until the new generation Humax Freesat box is available, and get one. No rush right now, as I can watch TV.
|
|
|
|
Post by karma67 on Apr 17, 2020 16:45:27 GMT
I have replaced the coax with Webro WF100 (a foam filled, copper coax) and the Humax is still dead. I can’t find a replacement tuner board, but I have installed an old ZGemma H2S I had lying around with a Freesat image now installed. It is doing the job. I think I will wait until the new generation Humax Freesat box is available, and get one. No rush right now, as I can watch TV. you'd be surprised if you made some interconnects from it. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 17, 2020 18:22:24 GMT
I have already thought about it.
|
|
