Because I don't have one available and to buy just would be expensive, plus I don't have an SMD soldering station. So, if replacing the fuse, cap and resistor doesn't fit it and I can't get a replacement PSU board for little money in the UK then it's the bin for the TV which would be a shame.
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Available from ebay for cheap. Use the same soldering iron you'll use for replacing the other components. Use some low melt solder.
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Thanks but I can't find them on ebay.co.ukComment
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Well I've ordered the part but I hope I can figure out how to fit it and it'll work!Comment
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You also need to check the components next to this smd chip (low-resistance resistors, diodes....).Comment
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Must to use the lamp in series to input.. to keep safe the new conponents.. you have to check if mosfet is shorted D-G, if yes the oscillating IC is 100% dead..Comment
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Well we replaced the PWM chip as well but still no joy. No standby light. So out of options now.Comment
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Thanks but not sure which one(s) you mean. Here's a pic of the new PWM chip.
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I should also add that when I plug the TV to mains power I hear the satisfactory 'click' from the PSU so something is better than what it was!Comment
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Have you checked these zener diodes?Attached FilesComment
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No. I haven't. They seem to have 3 legs on them. How do I test with my multimeter?Comment
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From 1 I get a beep in both directions with my DMM and a reading of around 70 ohms. From 2, 3 and 4 I get nothing in either direction from the DMM
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At 1 you get a sound signal because there is a 68 Ohm resistor (680) in parallel with it.Comment
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Thanks again. Does that mean the other 3 diodes are faulty?
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When checking in the "Diode" mode, they should show only in one direction, this is when the red probe is on the anode, and the black one is on the cathode, scrape off the varnish on the terminals and check again, maybe there is a bad contact with the probe, if nothing happens, then you need their replacement.Last edited by lotas; 01-07-2024, 07:34 AM.Comment
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OK. I will check again soon and report back. Does it sound like number 1 is faulty as I get a sound and a meter reading in both directions?Comment
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hi all, got this macbook with dead trackpad. after some investigation i found that fuse is bwlown. it's marked with a K on it. anyone kjnow it's value ? it is a 0402 package.
another problem is: i tried another trackpad that was working fine, but the feedback sensor was not. all volts are present, but the click mechanism isnt . -
Hello guys
Taking a look at some KNX domotic modules that were toasted due to some kind of electrical failure, I found out 2 weird looking resistors.
Seem to me like some kind of fuse resistor?
After diggin a bit seems like a fuse wirewound resistor wafer or whatever that is
They are very toasted but I think the 5 band colours are RED GOLD BLACK ORANGE ORANGE or the opposite, not sure which is the first band.
The red band is larger than the 4 others, but I dont have much experience with these components.
Also one of the orange... -
I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
I gotten a Carver CM-1090 amplifier from a friend who has kept it in storage for decades. Opened it up, thick layer of dust cumulated everywhere. Vacuumed it semi-cleaned, and blown off as much as possible the remaining dust. This is a 220V version.
On initial powered up with nothing connected - it works with all the lights and button indicator lit up as pressed, etc. I then powered off, connected a CD player into the CD RCA input and powered it on. It seemed to work for a short while and when I turned the volume up and down to see the the VUs works, the power started to clicked off... -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the...
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