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DiaaDms
 Post subject: Dna0
PostPosted: June 23rd, 2007, 20:13 
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Joined: May 31st, 2007, 10:14
Posts: 10
Location: Egypt
i have wd hdd itis spindle chip burned L6278 1.7E and R120 itis called at board R69 when i change L6278 1.7E and change R120 it burned again so where is problem

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CK
 Post subject:
PostPosted: June 23rd, 2007, 20:43 
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Joined: March 13th, 2005, 12:33
Posts: 872
Location: Dublin
Sounds like a faulty motor which is drawing too much current through the PCB and continually blowing your motor controller chip.
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rchadwick
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PostPosted: June 23rd, 2007, 22:32 
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Joined: December 23rd, 2006, 16:08
Posts: 935
Location: NJ
It might be a frozen spindle too. I have one that burned out the motor chip. When I replaced it, it immediately gets hot. Doesn't get hot when PCB is on another drive...
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Mikippp
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PostPosted: June 24th, 2007, 13:36 
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Joined: May 30th, 2005, 17:07
Posts: 542
Hi,
R69 is located in the -5V DC-DC converter...
If R69 is damaged -> check Q3, U9, L7...

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Amarbir[CDR-Labs]
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PostPosted: June 24th, 2007, 17:20 
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Joined: August 15th, 2006, 3:01
Posts: 3522
Location: CDRLabs @ Chandigarh [ India ]
What is U9 IC

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rameez
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PostPosted: June 26th, 2007, 13:20 
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Joined: June 27th, 2006, 11:33
Posts: 2288
Location: In ur HDD !
U9 is the address of the IC , which is mentioned on the pcb .
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