Lite-On PA-6601-1 - seeking help to identify blown transistor Q307A

harryw

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Join Date: Apr 2020

Posts: 6

Country: USA
#1

Lite-On PA-6601-1 - seeking help to identify blown transistor Q307A

07-04-2020, 03:00 PM

Hi,

trying to revive a dead power supply Lite-On 600W TESLAconverter PA-6601-1 manufactured in 2003 and originally used in a PowerMac G5.

Transistor Q307A underneath a heat shield was blown - it was labelled A2700 H403. How do I go about finding a replacement transistor?

Thanks & cheerio, Harry.
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budm

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Join Date: Feb 2010

Posts: 40746

Country: USA
#2

07-04-2020, 03:20 PM

Re: Lite-On PA-6601-1 - seeking help to identify blown transistor Q307A

uPA2700 N-CH MOSFET.
Trace out the connections to see if it makes senses.
Attached Files

uPA2700_N-CH.pdf (71.5 KB, 3 views)

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Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956

Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999

Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl

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http://s807.photobucket.com/user/budm/library/

TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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harryw

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Join Date: Apr 2020

Posts: 6

Country: USA
#3

07-04-2020, 04:45 PM

Re: Lite-On PA-6601-1 - seeking help to identify blown transistor Q307A

Awesome - thanks!
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Lite-On PA-6601-1 - seeking help to identify blown transistor Q307A

Lite-On PA-6601-1 - seeking help to identify blown transistor Q307A

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