Part identification / LED Monitor repair help

[sonja]

Hi together,

does anyone know what part this BAO N10 ACE4506 is, maybe a transistor? I think it is an TO-252 package, but I couldn't figure out what it is.
It is located in the input area of an ACER LED Monitor. Input voltage is 19 V. The monitor only powers up if I warm up the area around this part and doing a power cycle.

The voltage between the lower left and lower right pin is around 2.4 V, but only under load.

[Labrat101]

C 505 looks like it need re soldering and not making good contact.
That is a custom mark over . Could be a voltage regulator .
Measure all the voltages not just the voltage drop .  The tag is to ground  or plus ?
is the small centre pin a direct connection to the tag ?
Voltage from Tag to pin 1 ?
voltage from Tag  to pin 3?
Some monitors have a safety device and this is properly a SCR
Also R603 look as the end has come off  ..
This looks like a heavy load I would check the other components first ie that c 505 looks like a real bad connection .
Photo of the complete power section would also help

[Twoflower]

I would be more worried about the hole in D504. And probably D501 looks not good either.

[fzabkar]

EMBA0N10CS, Excelliance MOS Corp, N-ch logic level enhancement mode MOSFET, 100V, 12A, 100mOhm, marking BA0 + N10, TO-251:
http://www.excelliancemos.com/download_prod_s.php?ds=314&file=2

[sonja]

It seems that I haven’t enabled mail notifications...
Thanks for your superfast replies!

EMBA0N10CS, Excelliance MOS Corp, N-ch logic level enhancement mode MOSFET, 100V, 12A, 100mOhm, marking BA0 + N10, TO-251:
http://www.excelliancemos.com/download_prod_s.php?ds=314&file=2

Wow, thanks! I wasn’t able to find it, even identifying the brand by comparing the logo on the IC wasn’t possible for me.

I would be more worried about the hole in D504. And probably D501 looks not good either.

I unsoldered the two diodes, they seemed to be okay. I think they are intended to prevent polarity issues on the input.

C 505 looks like it need re soldering and not making good contact.
That is a custom mark over . Could be a voltage regulator .
Measure all the voltages not just the voltage drop .  The tag is to ground  or plus ?
is the small centre pin a direct connection to the tag ?
Voltage from Tag to pin 1 ?
voltage from Tag  to pin 3?
Some monitors have a safety device and this is properly a SCR
Also R603 look as the end has come off  ..
This looks like a heavy load I would check the other components first ie that c 505 looks like a real bad connection .
Photo of the complete power section would also help

Thanks for your suggestions, I will try to investigate further and report back.

[fzabkar]

I used these search terms:

https://ipv4.google.com/search?q=filetype:pdf+BA0+N10

[Twoflower]

Just for ma understanding. The diodes in the picture look badly damaged. Is this only an artefact in the picture or do at least one of them has a part of the housing missing? If that's the case I really wonder how they could survive that.

[sonja]

I used these search terms:

https://ipv4.google.com/search?q=filetype:pdf+BA0+N10

Okay lesson learned, I switched months ago to duckduckgo. I missed to use !g for deeper searching.

Just for ma understanding. The diodes in the picture look badly damaged. Is this only an artefact in the picture or do at least one of them has a part of the housing missing? If that's the case I really wonder how they could survive that.

Nah, they are okay. That is the bad image quality due to reflection and zoom.