PS1 SCPH-7002 - Disc won't spin

[Haggis H]

Hi, I'm new to this board (I'm also not Scottish, it's just a funny English "translation" of my surname).

So I picked up two (PAL) Playstations earlier this week, one was a SCPH-7502 and one was a SCPH-7002 (not working).

I checked the motherboard and there seems to be some soldering, literally, a little here and there. What it looks to me is nothing but quite a failed attempt to install a modchip. The soldering is (mostly) found on parts which are being soldered for modchips.

It is possible that the soldering connects two components with each other, but I can't really see it. Anyway, it is possible that it is the soldering that makes the disc not spinning? Or is it, as I fear, a destroyed component? I'm waiting for devices to desolder and will report back later on.

[CRTGAMER]

Very likely the solder work. Hopefully its just solder jumping between two contacts or across two pins of a chip on the PCB. Worse case is that something got cooked from the solder job. A Desolder suction tool is the best way to clean, a can of air blowing the melted solder off is another way.

[Haggis H]

Right, desoldering suction tool is precisely what I'm expecting. That and a new 15W soldering iron with a fine tip (3.5mm). Maybe not professional stuff, but I think it should be enough. Hopefully it should come in tomorrow, but I think the reality is rather not. So the report will likely come next week. I also believe that it's the soldering connecting two pins on one of the chips. The two westernmost pins on the chip marked "118 743" seem to possibly be soldered together (the most western alone is used for soldering to modchip, so I guess it has something to do with the CD reader). Man, just I hope it isn't a cooked component.

Thanks for the input.

[jinn]

Check if the solder bridge is near a square chip with the following #
C 2070
SC430949p8
G63C 185
SS0P0226C

Check for solder bridge or missing resistors
This chip controls the CD Drive, I think

[Haggis H]

It is the number six line that has some messed up soldering:



Number one has also got some soldering, but it doesn't seemed to be shared by any other component.

Now when I look at it accurately, both the most left ones and the right ones on the "number six line" are soldered together. The whole line seems to have solder, but it is the right ones that seem to be, 99 percent surely, connected to each other. I'm thinking that someone must have had a defect industrial soldering iron with a thick tip that could only warm from the sides who did this... Sure isn't a masterpiece. What a mess.

[jinn]

Use a Desoldering Braid with a 30 watt iron

I have seen a lot of 700x messed up because of failed modchip install to point #6

Not sure if they tried to install a 4 wire chip or a 7 wire chip. Check points # 4 and 7
It should be about 2 inches going up the board from point #8 and should look like the pictures from my previous post