Help needed to identify component for Sony MP-CL1 pocket projector

[jacob61992]

Hello,

In the process of disassembling my pocket projector for modifications, I tore into an electrical component that I have no idea what it does, and the device is no longer functional. Not my finest moment. There is a number written on the component - “5425Q” - I will attach some pictures to this post of both the component and the board it connects to. Any help would be greatly appreciated.

Thank you

 

[rjenkinsgb]

The package looks like one style of quartz crystal - but it's rather too large and having one on sprung contacts makes no sense.

I think it could be a supercapacitor or lithium cell, possibly an anti-tamper setup to prevent unauthorised service - if that is disconnected it may need a programmer connected to reconfigure it.

I've seen a few pieces of equipment in the past that used systems such as that..

If you have a multimeter, do you get a DC voltage across the two pads on the PCB when power is on? If it's a supercap or rechargeable cell, there should be voltage (unless the thing has been put in to some kind of shutdown mode).


I cannot find that exact part; the numbers may be a date code or batch code - but there are some supercaps in similar-style casings, eg.

https://www.arrow.com/en/products/cpx3225a752d/seiko-instruments-inc

Edit - another thought..
It could be an unusually large crystal, separate from the board as it's used to set the working frequency to suit the video standard / region the device is to be sold in??

 

[jacob61992]

Thank you for your input!

I’ve disassembled it further and have come to the conclusion that it’s actually the system speaker. I had discounted it as a possibility before because I was assuming the slits cut for the cooling fan were for the speaker.

Having taken this thing apart from end to end I know there isn’t a speaker anywhere else in the device, so that has to be it. A quick magnetic test would have shown that much sooner. Haha

At this point I’m thinking the reason it won’t turn on is a faulty battery. According to the manual, the blinking lights at the top of the device indicate an “internal error.” I didn’t think to test whether or not it still turns on before I started tearing into it, and it had been sitting unused for several years.