Toshiba C660D PWWBE LA-6849P Rev.2.0: Identify Missing Elements on Disc (PQ331, PQ332, PQ204)

Question

Please help me to identify the missing elements on the disc. The platform is PWWBE LA-6849P Rev.2.0. It's about PQ331, PQ332, PQ204. Does a...

fuse · Answer

In my opinion, PQ331 is the same as PQ351, and PQ332 is the same as PQ352, although it is more "divination" ...

tb777 · Answer

I'm betting too. The most is about PQ204.

boro1234567 · Answer

PQ204 is AO4435L_SO8 but I'm not 100% sure.

zdzich42 · Answer

Look at whether joseeph on a hamster does not have such or a related model

boro1234567 · Answer

The diagram of this disc is not available at the moment in my knowledge.

fuse · Answer

Watching the layout of the tracks also seems to me that it should be a transistor with the P channel, and taking into account the diode in the series (or rather the size of the pads after the disassembled diode) does not have to withstand high currents. I would try with AO4435L.

boro1234567 · Answer

Upload a macro photo of the vicinity of this transistor.

tb777 · Answer

Two additional photos of this place from both sides of the board:

Well, PQ204 is connected to the PQ207 source (on the other side of the board). PQ207 is AO4435L. Considering the above and this fragment of scheme C660 (paltforma LA-7202P)

I conclude that PQ204 is AO4409L.

Summing up, this CD should be:

PQ331 = SI4128DY (same as PQ351)
PQ332 = MDS2659 (same as PQ352)
PQ204 = AO4409L
PD203 - I'm not sure if it was planted at all.

Please, verify correctness.

adamadi33 · Answer

Yes. Yes.

fuse · Answer

but it probably was:

tb777 · Answer

From the picture it appears.

adamadi33 · Answer

So PD203 must be for the voltage to appear on the PQ204 which also does not exist.

tb777 · Answer

I think everything has already been said. Thank you all for your help.