fixing the hinges on the BP52 battery pack

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fixing the hinges on the BP52 battery pack

A known weakness on the Sony VAIO PCGA-BP52 battery pack is its hinges. Over time, due to the need for it to swivel so that the LCD panel could be opened all the way, the hinges loosen and the battery pack flops around like a broken window. The battery pack then becomes inconvenient and awkward to use. Despite this weakness, the Sony BP52 battery pack is actually engineered quite well. Nothing is really broken when the hinges becomes loose. All one has to do is to take the battery pack apart and tighten up all of the hinge joints and bolts.

Attached Image:

Hinge Bolts Set 1.jpg

Chieh Cheng
Fri, 3 Dec 2004 00:08:00 -0800

To take the battery pack apart, see the BP52 rebuild article. Once the battery pack has been taken apart, tighten down all the screws and hinge bolts in the pictures shown. The battery pack is engineered extremely well. All of the screw sockets are made out of metal, so nothing is damaged and can be easily repaired.

Attached Image:

Hinge Bolts Set 2.jpg

Chieh Cheng
Fri, 3 Dec 2004 00:08:59 -0800

Finally, I would get rid of the lock switch. One primary reason that the hinges loosen is due to the force put onto them when someone tries to swivel the battery pack while it is locked. I have always found the lock switch to be awkward and unnecessary. The swivel operation is a lot smooth after I eliminated the lock switch on my BP52.

Attached Image:

Eliminate the Lock Switch.jpg

Chieh Cheng
Fri, 3 Dec 2004 00:11:23 -0800

Hello,
I recently came across this post on fixing the hinges of a Sony BP52 battery. I happen to have the same problem (that's sort of how I found your article) but I was wondering how exactly did you remove the tamper-proof screws fastening the casing. If you can elaborate on that, it would very helpful. Thanks.

Min Tsui
Fri, 22 Apr 2005 07:34:27 -0700 (PDT)

Hi Min,
That information is located in "Rebuilding the Sony VAIO PCGA-BP52 Li-Ion notebook battery pack".

Chieh Cheng
Fri, 22 Apr 2005 09:46:34 -0700

Hi Chieh,

Thanks for replying. I looked over the link and tried to do as you described, but no matter what sized screwdriver I use, they didn't seem to budge the screws anywhere. So when you mention "some friction" involved in their removal, what did you use to provide that friction?

Min Tsui
Sat, 23 Apr 2005 00:39:34 -0700

I used a phillips screw driver and pushed down really hard on the temper-proof screws. I kept turning it while applying a lot of force, until the friction between the screwdriver and the screw finally freed the screw.

If that doesn't work for you, you can always drill the screws out.

Chieh Cheng
Sun, 24 Apr 2005 15:20:13 -0700

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