PB 140-180 burned LoBo - fix?

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bengi's picture
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Joined: Aug 2 2005
Posts: 70

I have a couple of 140-180 LoBo with a burned part under the power supply socket:

http://homepage.mac.com/bengi/files/fuse.jpg

Is there any solution to fix them, soldering the burnt fuse or whatever?

Ben

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PB: 100, 160, 180, 180c, 190, 190c, 5300cs, 5300c, 5300ce B/W 5300ce, 1400c 166, 3500, WS 500 MHz, Aluminium 15: 1.25, 1.5 Hi Res display, 1.67 DL, iBook G3: 12" 500, 800, 14" 900, G4 14" 1.33, MacBook white unibody, Classic: 40MHz 68030, Classic II, Color Classic, SE, SE/30, LC, II, 475, 575, 630, Quadra 700, PowerMac 4400, 7600 G4 1000 MHz, PowerMac 8600 G4 450, PowerMac G3 700 MHz G4 (custom), PowerMac G5 2.0, 2.7 LQ, MacPro 3.2 GHz, MacBook Pro 2013

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dankephoto's picture
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Joined: Dec 20 2003
Posts: 1900
part labeled D16?

I was initially gonna say this is the common and typical PowerBook 1XX blown fuse issue, but that don't look like a fuse, nor is it in the same place as the fuses I've replaced.

My electronic ignorance rears its ugly head right about now. Anyone know what the heck is a "D" part, as in "D16"? Sorry I'm not much help . . . Tongue

dan k

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eeun's picture
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Joined: Dec 19 2003
Posts: 1891
Surface mount diode. Likel

Surface mount diode.

Likely there for protection against reverse voltage. Possibly someone tried a non-apple AC adapter that had reversed polarity.

Providing nothing else is cooked, if you can find the diode's part number, perhaps from a working 140/180, you should be able to order an equivalent from Digi-Key or similar.
Er...what can I remember about those models...7 volts, around 1.2 amps? Anything you can find matching approx. those values should work.

If you get a replacement, make sure the silver line is oriented the same way as the original Wink

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bengi's picture
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Joined: Aug 2 2005
Posts: 70
thanks! as soon as I can, I g

thanks! as soon as I can, I go to an electric stuff shop and let you know,

Ben

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PB: 100, 160, 180, 180c, 190, 190c, 5300cs, 5300c, 5300ce B/W 5300ce, 1400c 166, 3500, WS 500 MHz, Aluminium 15: 1.25, 1.5 Hi Res display, 1.67 DL, iBook G3: 12" 500, 800, 14" 900, G4 14" 1.33, MacBook white unibody, Classic: 40MHz 68030, Classic II, Color Classic, SE, SE/30, LC, II, 475, 575, 630, Quadra 700, PowerMac 4400, 7600 G4 1000 MHz, PowerMac 8600 G4 450, PowerMac G3 700 MHz G4 (custom), PowerMac G5 2.0, 2.7 LQ, MacPro 3.2 GHz, MacBook Pro 2013

bengi's picture
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Joined: Aug 2 2005
Posts: 70
Re: thanks! as soon as I can, I g

replacd diodes, stil do not work...

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PB: 100, 160, 180, 180c, 190, 190c, 5300cs, 5300c, 5300ce B/W 5300ce, 1400c 166, 3500, WS 500 MHz, Aluminium 15: 1.25, 1.5 Hi Res display, 1.67 DL, iBook G3: 12" 500, 800, 14" 900, G4 14" 1.33, MacBook white unibody, Classic: 40MHz 68030, Classic II, Color Classic, SE, SE/30, LC, II, 475, 575, 630, Quadra 700, PowerMac 4400, 7600 G4 1000 MHz, PowerMac 8600 G4 450, PowerMac G3 700 MHz G4 (custom), PowerMac G5 2.0, 2.7 LQ, MacPro 3.2 GHz, MacBook Pro 2013