Viewfinder not working, LCD is okay. How to repair?

Question

Sony DSC-H50

Sony digital still camera model DSC-H50, February 2008, 3.0" tilting LCD, 9.1 MP CCD, Zoom 15x (31-465mm), f/2.7-4.5

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Hypercaff @hypercaff

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投稿日: 2022年7月9日

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Viewfinder not working, LCD is okay. How to repair?

My Sony DSC-H50's viewfinder does not illuminate when I switch from LCD to viewfinder mode. All other functions work, including the external LCD display. Does anyone know of a repair guide or video? My searches have turned up nothing.

EDIT: After posting this yesterday I did see the viewfinder flash (illuminate) briefly several times, but not in any reproducible way and not when I tried to switch to viewfinder mode. Seems most likely it is a loose connector.

EDIT2: I have attached the Sony repair manual (to the camera info page), but it doesn't really list steps, so I'm hesitant to dive in.

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Have you tried disconnecting any unnecessary modules and testing ? I have encountered a similar issue on some canon cameras when the flash module was shorted

How It's Fixed さんによる2022年7月9日

Thanks, HIF. This camera has no accessories/modules attached.

Hypercaff さんによる2022年7月10日

@hypercaff hey, I think you misunderstood me. I’m taking about the built in flash module which is present in this model.

How It's Fixed さんによる2022年7月10日

You're right, I did misunderstand you. The flash module works fine. I haven't disconnected it because I haven't yet figured the right way to disassemble the camera.

Hypercaff さんによる2022年7月10日

@hypercaff this service manual should help.

Good luck !

https://www.manualslib.com/manual/125436...

How It's Fixed さんによる2022年7月10日

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Hypercaff @hypercaff

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I got the camera apart (Thank you, @how_its_fixed!) and found that the ribbon cable between the main board and the viewfinder has several broken traces as shown below. For perversity's sake, pics were taken with the camera itself.

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It appears that flex was laying against something that got hot. That looks like it is burned. Replacing the cable should work, just make sure it is not touching what caused that.

bill さんによる2022年7月10日

I have the same problem today with the EVR of my Sony alpha 58 DSLR. Thankfully, I was able to see your post. This gives me a lead to how I can fix my camera. But then, how do you call this ribbon?

Jose Marie Villas さんによる2023年7月22日

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Have you tried disconnecting any unnecessary modules and testing ? I have encountered a similar issue on some canon cameras when the flash module was shorted — How It's Fixed
Thanks, HIF. This camera has no accessories/modules attached. — Hypercaff
@hypercaff hey, I think you misunderstood me. I’m taking about the built in flash module which is present in this model. — How It's Fixed
You're right, I did misunderstand you. The flash module works fine. I haven't disconnected it because I haven't yet figured the right way to disassemble the camera. — Hypercaff
@hypercaff this service manual should help.

Good luck !

https://www.manualslib.com/manual/125436... — How It's Fixed
It appears that flex was laying against something that got hot. That looks like it is burned. Replacing the cable should work, just make sure it is not touching what caused that. — bill
I have the same problem today with the EVR of my Sony alpha 58 DSLR. Thankfully, I was able to see your post. This gives me a lead to how I can fix my camera. But then, how do you call this ribbon? — Jose Marie Villas