Someone can help me to identify the correct value of zd1 and c10 and c11 i need get for replace inside this iiyama MONITOR drive controller PLC2234 ?
Power supply is 12 Volts

 

Wow, that looks bad! So what is the power input to the socket supposed to be? And do you know why the 3 components have exploded? It looks like it was way overvoltaged. Does its power adapter still work and put out the correct voltage?
I am guessing the zd1 is transient protection and the caps are standard caps probably 100nf. For the correct values, you need to find the service manual/circuit for your monitor.

 

Wow, that looks bad! So what is the power input to the socket supposed to be? And do you know why the 3 components have exploded? It looks like it was way overvoltaged. Does its power adapter still work and put out the correct voltage?
I am guessing the zd1 is transient protection and the caps are standard caps probably 100nf. For the correct values, you need to find the service manual/circuit for your monitor.

Hi! 3 component exploded for power surge
i think hard find manual/circuit, the monitor is MODEL PLC2234 T2234MSC-B6X RATING 12V 4A .

 

Does the power adapter still work and put out the correct voltage?

 

Does the power adapter still work and put out the correct voltage?

YES, power adapter work correctly

 

With no circuit, I would guess the 2 caps at the power in are just decoupling caps, 100nF 50v or 100V. The zd1 would have to be some kind of transient suppressor. I couldnt really suggest one randomly.

The question is if any other components downstream of the 3 damaged ones are also damaged. If so, then repairing without the service manual would be very difficult. If on the other hand, the exploded TVS has done its duty and protected the other components then, it becomes a matter of just replacing the TVS with something that would do the job.

The first thing is to use a multimeter set to a low Ohm range and probe the power in socket to see if the power in is shorted or not or what the resistance is, it could vary due to caps. If you dont see a short, or very low resistance, then the only way that you are going to find out if anything else is damaged is to power it up again, hence my earlier question about the power adapter. The already damaged (3 components) would be in parallel to the power in, so power still should go through the circuit.

I can only tell you what I would do in such a situation, you would have to make your own decision as to whether you want to try plugging it in again or not at your own risk.

If it were me, I would see no choice but to power it up one more time to see if anything works at all. You may already know that it doesnt work if when it was hit with the surge and didnt come back on, or the mains fuse went and you never tried plugging it in, or you have already tried it.

So, If you have already tried powering it up, and its dead, I would expect there is more damage than the 3 components. If you haven't, and want to try, I would clean the explosion area and the damaged components just to remove bits, solder, and carbon from the components and try it again.

I am sure there are more experts here that may come up with a better way, but I cant think of anything.

 

With no circuit, I would guess the 2 caps at the power in are just decoupling caps, 100nF 50v or 100V. The zd1 would have to be some kind of transient suppressor. I couldnt really suggest one randomly.

The question is if any other components downstream of the 3 damaged ones are also damaged. If so, then repairing without the service manual would be very difficult. If on the other hand, the exploded TVS has done its duty and protected the other components then, it becomes a matter of just replacing the TVS with something that would do the job.

The first thing is to use a multimeter set to a low Ohm range and probe the power in socket to see if the power in is shorted or not or what the resistance is, it could vary due to caps. If you dont see a short, or very low resistance, then the only way that you are going to find out if anything else is damaged is to power it up again, hence my earlier question about the power adapter. The already damaged (3 components) would be in parallel to the power in, so power still should go through the circuit.

I can only tell you what I would do in such a situation, you would have to make your own decision as to whether you want to try plugging it in again or not at your own risk.

If it were me, I would see no choice but to power it up one more time to see if anything works at all. You may already know that it doesnt work if when it was hit with the surge and didnt come back on, or the mains fuse went and you never tried plugging it in, or you have already tried it.

So, If you have already tried powering it up, and its dead, I would expect there is more damage than the 3 components. If you haven't, and want to try, I would clean the explosion area and the damaged components just to remove bits, solder, and carbon from the components and try it again.

I am sure there are more experts here that may come up with a better way, but I cant think of anything.

Ok, Tnx for your time 8)