Hi
I have problem with SMPS from sony shi... device 😕
The first problem that I managed to find was a shorted one of the two MOSFETs marked K16A60W.
I replaced 2 of them with the same ones. They are located in the middle of the largest radiator on the board). I also replaced the main 10A fuse, but unfortunately it did not help.
While searching for faults, I reached the area marked with a red square.
The R39 resistor was burnt, but I could not read its value, and an interesting coincidence is the fact that the available service manual for this model does not contain a schematic diagram of the power supply... I put a 220 ohm resistor there, because I found this value in the catalog note of the ICE2PCS01 IC (PFC). In my region, I could not find the THT version, so I did the same in the SMD version.
After checking the entire area around the ICE2PCS01 IC (PFC), I did not find any damage and started the device using a 150W tungsten bulb. It didn't even have time to flash before I heard a crack. R39 flew again, and with it the ICE. I've run out of ideas and I don't know what to do next...
I checked all the elements that are near the ICE and even those outside the red square and I found nothing. The resistor values are ok, but there is one thing that puzzles me.
This is the first time I've noticed that there is a connection between the primary and secondary windings, as you can see in the last photo. I've repaired some SMPS, but I've never had a case like this before.
Please help.🙁
I have problem with SMPS from sony shi... device 😕
The first problem that I managed to find was a shorted one of the two MOSFETs marked K16A60W.
I replaced 2 of them with the same ones. They are located in the middle of the largest radiator on the board). I also replaced the main 10A fuse, but unfortunately it did not help.
While searching for faults, I reached the area marked with a red square.
The R39 resistor was burnt, but I could not read its value, and an interesting coincidence is the fact that the available service manual for this model does not contain a schematic diagram of the power supply... I put a 220 ohm resistor there, because I found this value in the catalog note of the ICE2PCS01 IC (PFC). In my region, I could not find the THT version, so I did the same in the SMD version.
After checking the entire area around the ICE2PCS01 IC (PFC), I did not find any damage and started the device using a 150W tungsten bulb. It didn't even have time to flash before I heard a crack. R39 flew again, and with it the ICE. I've run out of ideas and I don't know what to do next...
I checked all the elements that are near the ICE and even those outside the red square and I found nothing. The resistor values are ok, but there is one thing that puzzles me.
This is the first time I've noticed that there is a connection between the primary and secondary windings, as you can see in the last photo. I've repaired some SMPS, but I've never had a case like this before.
Please help.🙁
Last edited: