How to Repair a Samsung monitor that goes to ad "not optimum mode" monitor
This annoyed me for too long now. Suddenly the image disappeared to be replaced by an unsurpassed Announcement not optimum mode, recommended mode 1280x1024 60hz , "and from there taken down no more.
You could restart the PC as you wanted, but did not change anything.
early to say Actually, the phenomenon was quite casual enough to wait a while ', fiddling with windows, and everything came back fine, so much to convince me that the problem was the OS or the video card.
But in the end had become a nightmare repeated itself in an obsessive way.
And the worst was that he was not my monitor, but of a friend who barely distinguish a computer from a toaster, and every time burst into tearful appeals.
short, a tragedy without end.
Taken by desperation, I even brought my PC to the boys of Information Technology, but for which the horn was as healthy as a fish.
Then, only then, I gave up: the bastard was just the monitor, animated by an evil will that he had decided to ruin my day.
So I brought my friend monitor (just use a laptop) and tossed her into the cellar, waiting to deliver it to recycle to be made into small pieces in order to recover plastics and metals.
Then the lighting, I started to look on Google and I made the discovery: this problem, the monitor goes crazy and goes to "not optimum mode" seems to be a characteristic of a whole generation of Monitor Samsung: families 7xx e9xx a few years ago.
For unknown reasons, over time there is something that degrades the components, and probably this is combined with a design is not very accurate, since according to some items Internet signal pins of a chip seems to have a voltage well below the nominal 5 volt digital electronics.
And here is the solution : instead of making a flight to monitor the container in the AMS for e-waste, it seemed sufficient solder between pins 5 and 6 of the microprocessor indicted (Novatek NT68F63LG) una insignificante resistenza da 47-50 ohm, 1/4 o 1/2 watt .
Sembrava troppo semplice, ma in cantina, oltre al fetentissimo monitor, avevo anche un po’ di vecchi saldatori, di quelli che usavo quando giovincello mi dilettavo di elettronica. Certo, le loro punte non erano esattamente così sottili quanto le piedinature dei moderni circuiti integrati richiederebbero, ma ricordavo che lo stagno ha la tendenza a “fare la goccia” senza allargarsi troppo, così ho deciso di provare.
Come per tutti i prodotti montati da macchine, lo smontaggio è stata forse la parte più difficile, tra viti e incastri, dopo di che la mother board era esattamente come le foto su internet mostravano.
Ho preso la mia bella resistenza (10 centesimi di euro nel negozio di componenti elettronici), ho accorciato un poco i suoi reofori e poi con l’aiuto di una mano che teneva la bestiolina (che sennò col cavolo che riesci a saldarla), sono andato giù di stagno e saldatore.
Il risultato è questo:
Oggettivamente, come saldatura fa davvero schifo, del resto saranno 25 anni che non prendevo in mano un saldatore, in compenso sono oramai un paio di settimane che il monitor va ininterrottamente over and over for hours without complaining.
Ultimately, ten cents and a bit 'tin I have avoided to create an electronic waste and it saved my friend a hundred euro for a new monitor.
Ingredients needed:
- a samsung 710 or 713 or 913
- a screwdriver
- a resistance of 47 ohms (with 50 ohms seems they may be)
- a 40 watt soldering iron
- a piece of tin for electronics.
If you wish to look in the old drawer of electronic junk, the resistors 47 and 50 Ohm are like this:
The following items (in English and English) to which I owe the salvation of the monitor;
