Power Supply Issue: Large Photo-Trap Burnt at 19V, SS34 Diode Hot, Replacement Needed?

Question

Hello
I connected the photo-trap for the power supply with the fact that instead of under 9V it was under 19V
Now, after inserting the battery, it does not react, I unscrew it, the board near the SS34 diode gets hot, the diode replacement did not help, it still burns the finger after touching the disc.

Can you revive it or a basket?

Anonymous · Accepted Answer

The picture shows that there are at least two resistors burned (literally). More items may be damaged.

Anonymous · Accepted Answer

It can be replaced by having precisely precise tools and an experience in soldering precision elements. A bigger problem may be with the identification of damaged elements. If this C4NV system could be identified, the values of the elements cooperating with it could be identified on the basis of the application note. Unfortunately, I have not found much information about this C4NV. On the Russian-language forum I found information that this element is in a photo trap marked HC-550M and maybe it is a 5V voltage regulator from the series with the designation S-812C33BMC-C4NT2x.

Anonymous · Accepted Answer

This S-812C regulator can withstand a maximum of 16V at the input, so the 19V which got probably damaged it. The number 33 in the designation S-812C 33 The BMC-C4NT2x can indicate 3.3V output voltage. I found the regulator at a price of 0.84 euros plus shipping. Perhaps it could be replaced by another regulator. It is also unclear whether this second similar item which I marked in the picture in post # 4 is not damaged. The value of the damaged components of the power circuits themselves may be several (PLN) zlotys, unless the processor, for example, has been damaged.

Birkof37 · Answer

which one ? Can it be exchanged? Added after 11 [minutes]:   are these resistors?

Anonymous · Answer

Below I marked another damaged resistor (choke?). At least that's how it looks in the picture. This horizontal element marked in orange is probably a capacitor. There may be a defective element marked C4NV, it is probably a regulator system (voltage converter). In total, there are two such elements in the picture. Unfortunately, as for this C4NV, I can not find out exactly what the element is behind the C4NV designation.

Birkof37 · Answer

Is it possible to mention it? these are very small elements ...

Birkof37 · Answer

Yes, my model trap is HC350M so probably everything is the same as the HC550M The input via the power supply is 9V It seems to me that the skin is not worth a layette? What do you think ?

Birkof37 · Answer

I think I will give in ... I will buy another one and I will have components in case of something ... Thanks for the help greetings

Anonymous · Answer

If the 19V voltage pierces through this regulator and the further circuits of the photomicrograph, eg the processor, have occurred, some of the elements may be irreparably damaged. If there are no major damages outside of the power supply circuits, you can try to fix the photo-trap. This voltage regulator could probably be replaced by another regulator with the same output voltage. Of course, you need to check the remaining components at the regulator if they are damaged. Repairing on hit or miss can irreparably damage the fotopułapa.

Power Supply Issue: Large Photo-Trap Burnt at 19V, SS34 Diode Hot, Replacement Needed?

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