• Monitor LG 20M35A-B spalony układ

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
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#1 Monitor LG 20M35A-B spalony układ


by john47 3 April 2017, 07:14
Image

Czy wie ktoś jaki jest to dokładnie układ? Czy idzie go kupić org lub zamiennik?

Układ spalił się po podłączeniu zasilacza 19,5V, a powinno być 19V. 0,5 V wystarczyło żeby to ufajczyć?

Re: Monitor LG 20M35A-B spalony układ


by Google Adsense [BOT] 3 April 2017, 07:14

#2 Re: Monitor LG 20M35A-B spalony układ


by matic 3 April 2017, 11:25
Burned component is switching controller chip APW7331. You have to replace it with the same chip.

19.5V instead 19V is probably not problem. I think It can be caused by reversed polarity of power supply. Check it.

#3 Re: Monitor LG 20M35A-B spalony układ


by morph 3 April 2017, 11:32
Witaj

To zależy od jakości zasilacza, na niektórych chińskich zamiennikach pisze jedno, a na wyjściu dają kilka woltów więcej.
Podaj oznaczenia z PCB, może jest do znalezienia service manual. Podaj również
Mam sprawną, nową elektronikę z 22M35A-B, jest duża szansa, że elektronika jest taka sama.

#4 Re: Monitor LG 20M35A-B spalony układ


by john47 3 April 2017, 12:21
Zasilacz nie był jakiś super, polaryzację raczej miałem dobrze plus w środku.
Oznaczenia mam takie:
EN 335/M35A/M45A
EAX6498505(1.0)
LGH-038151

#5 Re: Monitor LG 20M35A-B spalony układ


by matic 4 April 2017, 14:02
Was the chip blew up immediately when you connected the power supply, or it works some time, and then blow it up?

Re: Monitor LG 20M35A-B spalony układ


by Google Adsense [BOT] 4 April 2017, 14:02
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