I removed the PCB from the unit and then removed the heatsink and nothing else, the plastic inputs are fine and don't need to be removed. I don't remember any wires on the PCB and so didn't remove any wires.
My Humax Forum » Freeview HD » FVP 4000T, 5000T
Fvp-4000t no power led & not working
(20 posts)-
| Sun 11 Dec 2022 20:14:28 #11 |
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Thank you for your help and advice.
I used an heat gun on the circuit board earlier so I could concentrate the heat in that particular area. Low and behold it's worked :). For how long this fix will work, I'm not sure, but happy bunny for now.
It's also sorted out the bad hdmi connection that wasn't working.| Mon 12 Dec 2022 18:28:28 #12 | -
Dazza1969 - 7 mins ago »
Thank you for your help and advice.
I used an heat gun on the circuit board earlier so I could concentrate the heat in that particular area. Low and behold it's worked :). For how long this fix will work, I'm not sure, but happy bunny for now.
It's also sorted out the bad hdmi connection that wasn't working.That's excellent, just for anyone in the future, be careful using a heat gun as it's very easy to blow components off the PCB.
| Mon 12 Dec 2022 18:42:13 #13 | -
My Humax died without warning. No light & wouldn't turn on.
I took the PCB / Motherboard out and cooked it in the oven as described on here. I was sceptical but thought it was worth a last itch attempt to get it going.
AND !!!!!! It worked. I'm over the moon as I can't manage without a Humax & a new one would have cost me a small fortune.
If your Humax is dead this is well worth a try.| Wed 1 May 2024 11:42:43 #14 | -
Hello, just joined the forum. My FVP 4000-T stopped working (no red light but the inside did become warm) a few months ago so having checked everything else, eg the charger, I tried the oven trick described here and it worked a treat! A few days ago it packed up again in the same way, and the oven method worked again. I was, frankly, amazed. Does anyone know _why_ this should work? I did wonder whether it might have fixed any dry soldered joints, however I don't think it gets hot enough for that. So any insight into this would be appreciated.
| Tue 10 Sep 2024 16:04:33 #15 | -
Mine died again this evening, it lasted nearly 2 years since I first cooked it.
I cooked it again tonight and it's working again.
I changed my method slightly, this time I put it in the oven before the oven heated up, I let it heat up to 200 degrees C (about 12 minutes) then kept the oven on for 10 minutes then turned off the oven and let it cool in the oven for 30 minutes.
Mine is a 4000 have any 5000s failed in this way? I'm just wondering if it would be worth buying a 5000 off eBay as a spare.
| Tue 8 Oct 2024 23:19:27 #16 | -
Davidst - 4 weeks ago »
Hello, just joined the forum. My FVP 4000-T stopped working (no red light but the inside did become warm) a few months ago so having checked everything else, eg the charger, I tried the oven trick described here and it worked a treat! A few days ago it packed up again in the same way, and the oven method worked again. I was, frankly, amazed. Does anyone know _why_ this should work? I did wonder whether it might have fixed any dry soldered joints, however I don't think it gets hot enough for that. So any insight into this would be appreciated.Reading some info about BGA (Ball Grid Array) chip reflow, the recommended temperature ranges seem to be from 190°C to 240°C so it may well be reflowing the solder but obviously not very well because the issue reoccurs.
| Wed 9 Oct 2024 11:10:56 #17 | -
My 4000t was about to go in the bin so I tried the in the air fryer 200deg C for 5 minutes. I can't believe that it worked, and everything is back up and running. Gives me time to choose a replacement. Thanks to all the members who suggested this!
| Fri 8 Nov 2024 9:07:32 #18 | -
I have managed to breathe like back into one of these 4000t boxes which as described above would not turn on and the only sign of life was the high pitches whistle. I did try the 200c for 10 minutes on the removed motherboard fix but that didn't appear to work. I did notice before however, that foam pads under ther motherboard were disintegrating and bits were stuck to the motherboard. One surrounded by a metallised fabric was OK but probably needs refitting properly for earthing. Before baking I did wash the remains of the foam off with a stout art paint brush and propranol. When this didn't work I finally really washed the board with copious propranol and vigorous brushing, removing brown surface varnish/dirt. After this it appeared to work normally. No reason at present to think this is temporary but unknown at present. Only done this once on one of these but I have fixed a humax 9000t clock failure and a ford focus dashboard failure twice with the same simple fix. Fairly easy to do in this case. Hidden clips under the unit and one screw to remove the lid....there's a utube on it. Good luck.
| Thu 21 Nov 2024 8:57:46 #19 | -
I have managed to breathe like back into one of these 4000t boxes which as described above would not turn on and the only sign of life was the high pitches whistle. I did try the 200c for 10 minutes on the removed motherboard fix but that didn't appear to work. I did notice before however, that foam pads under ther motherboard were disintegrating and bits were stuck to the motherboard. One surrounded by a metallised fabric was OK but probably needs refitting properly for earthing. Before baking I did wash the remains of the foam off with a stout art paint brush and propranol. When this didn't work I finally really washed the board with copious propranol and vigorous brushing, removing brown surface varnish/dirt. After this it appeared to work normally. No reason at present to think this is temporary but unknown at present. Only done this once on one of these but I have fixed a humax 9000t clock failure and a ford focus dashboard failure twice with the same simple fix. Fairly easy to do in this case. Hidden clips under the unit and one screw to remove the lid....there's a utube on it. Good luck.
| Thu 21 Nov 2024 8:58:37 #20 |
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