Monitor will not power on

2013 · 2 Feb 2023 at 18:08

Monitor will not power on,
I was wondering if anyone had any suggestions, Monitor will not power on, I switched screens in December because my spare GPU did not have a DVI port, Now I have tried turning it on again so I could use it with a new card and it wont power back up.

Power cable works.

EsaT · 2 Feb 2023 at 20:17

Is it old monitor and it was unused/disconnected from wall since December?

If there's no sign of life, power supply or more precisely capacitors, could have died.

2013 · 2 Feb 2023 at 20:21

EsaT said:
Is it old monitor and it was unused/disconnected from wall since December?

If there's no sign of life, power supply or more precisely capacitors, could have died.

Yes its a old monitor 305t, Yes, i removed the power cable to use on the other screen.
No sign, cant see any light on the power button on the front.

cable works because I re checked it with the other monitor.

no sure what to do.

EsaT · 2 Feb 2023 at 20:53

Bad condition/worn out capacitors propably got permanently cold.
At one time Samsung basically built failure timer into their monitors and TVs with low quality C(r)apXon capacitors and bad design.

And looks like it was hot running basing on this:

https://repair.wiki/w/Samsung_Syncmaster_305T

Recapping power supply board would likely solve the problem.

2013 · 2 Feb 2023 at 20:57

EsaT said:
Bad condition/worn out capacitors propably got permanently cold.
At one time Samsung basically built failure timer into their monitors and TVs with low quality C(r)apXon capacitors and bad design.

And looks like it was hot running basing on this:

https://repair.wiki/w/Samsung_Syncmaster_305T

Recapping power supply board would likely solve the problem.

Thanks, I have no idea of cost and im not sure its something could do (never done much soldering).
would it be easy or cheap to buy the caps have them soldered or would it just be better to put that little bit towards a newer screen ?

EsaT · 2 Feb 2023 at 21:51

New capacitors would be somewhere from around £10 to around £20 depending on how many there are and do you replace also mains voltage bulk capacitor.
There used to be LCDAlternatives site selling capacitor kits and it had quite many Samsung monitors/TVs, but they seem to have disappeared.

Image is quite bad, but at lest couple capacitors are almost touching heatsinks:

Samsung 305T, LCD Monitor Repair Kit, Capacitors Only, Not the Entire Board

<p> </p> <table align="center" border="1" cellpadding="1" cellspacing="1" height="100" width="400"> <caption> <strong><span style="font-size: xx-large;"><span style="color: rgb(255, 0, 0);">Included Capacitors</span></span></strong></caption> <thead> <tr> <th scope="col"> <span...

web.archive.org

2013 · 3 Feb 2023 at 07:24

EsaT said:
Bad condition/worn out capacitors propably got permanently cold.
At one time Samsung basically built failure timer into their monitors and TVs with low quality C(r)apXon capacitors and bad design.

And looks like it was hot running basing on this:

https://repair.wiki/w/Samsung_Syncmaster_305T

Recapping power supply board would likely solve the problem.

It seam the best option would be to buy a new one.
I was hoping to give it to someone but I guess ill need to give up on it.

Thanks for all your help