Electronics > Repair

Samsung 32" S32D850T Monitor Repair story

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sausage:
I assume this is the place to share repair stories as well? If not I'll have it removed. Fixed and blogged about the repair over the weekend:

http://blog.waynejohnson.net/doku.php/s32d850t_monitor_repair

fzabkar:
Congratulations.

The bridge rectifier and MOSFET chopper are generally the major culprits in cases involving a blown mains fuse. You could have saved yourself a handful of fuses if you had started there.

sausage:
Yep, certainly excellent education for next time. But I am glad I went down the rabbit holes. I spent a lot of time getting very intimate with many components trying to locate datasheets and all sorts of things. But next time, yep straight to those components if it's not a simple cap :)

lolimpol:
Hi Wayne,
I've been trying to reach you on your site but your contact form is broken :(

I have a similar 27" Samsung monitor, and I was wondering if you could help me on my way.

The monitor turns off after a random amount of time, sometimes 30mins, sometimes 30 seconds. It doesn't turn on again unless you unplug it, wait and plug it back in. I probed the a13V pad that goes to the logic board, and it slowly settles down from 5 to around 0V (from the Capacitor I assume) also when I flip the board on the table; so out of the monitor, it turns on/off sometimes.

The rectifier reads a nice 350ish volts DC when turned off, and to be quite honest I haven't dared to probe around more on the AC side.

Any idea where to look?

Thanks so much.

sausage:
Hi lolimpol, really sorry I didn't get this notification. In fact I don't think I get notifications for post changes. I'll get that switched on.

My contact form should be working, I got a message on it the other day, but maybe there is an occasional problem. Maybe we can help each other. Keen to see if I can help you.

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