Hi guys! New around here
I have about 20 TVs that I got from a hotel.
The model is Samsung HG40ND690DB (Hospitality TV).
These TVs are all having the same issue (presumably), that they randomly after some time turn off (and then turn on again a second later).
I am not very good with electronics, so hoping for some guidance as to
where and how to diagnose which components of the power supply that might be failing. Don't have much else on hand than a multimeter and soldering iron.
No visible bulging on any of the capacitors.
Have tried this already:
- Replacing the 25v 1500uf capacitors with 35v 1500uf ones.
- Disconnect WiFi module
- How should I measure the 2/3/4 pin mosfets with multimeter in-curcit? I'm guessing that's something I should check.
- Is this a model with known failures?
- Which components should I continue to check (and how?)
Thank you!
Please see attached pictures of one of the power supply boards.
I have about 20 TVs that I got from a hotel.
The model is Samsung HG40ND690DB (Hospitality TV).
These TVs are all having the same issue (presumably), that they randomly after some time turn off (and then turn on again a second later).
I am not very good with electronics, so hoping for some guidance as to
where and how to diagnose which components of the power supply that might be failing. Don't have much else on hand than a multimeter and soldering iron.
No visible bulging on any of the capacitors.
Have tried this already:
- Replacing the 25v 1500uf capacitors with 35v 1500uf ones.
- Disconnect WiFi module
- How should I measure the 2/3/4 pin mosfets with multimeter in-curcit? I'm guessing that's something I should check.
- Is this a model with known failures?
- Which components should I continue to check (and how?)
Thank you!
Please see attached pictures of one of the power supply boards.
Comment