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Archive_microdot
 Post subject:
PostPosted: August 25th, 2003, 2:27 
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Joined: August 23rd, 2003, 4:47
Posts: 9
Location: USA
Hi,

We have few quantum Lct 10, All these hdd have a problem that after working for around 1 hour they start making a noise from the media and the ID TDA5247HT start getting heating up. If we continue running the drive the IC burns off.
If we stop the drive and run it after 1hr, it again works for some time and than same problem comes up again.

Can Anybody help us out.

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Naveen Agarwal

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Archive_Carlos Cantero
 Post subject:
PostPosted: August 25th, 2003, 8:23 
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Joined: June 25th, 2003, 18:01
Posts: 21
Location: Madrid/Spain
Hi

The problem with the LCT series of Quantum, is in fact the TDA5247HT. This is the motor controller. You are lucky becouse at least you have your drive working for an hour, but the normal sympthon is that the drive stops working. You need to replace the PCB with an identical one, and the drive will work again.
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Archive_microdot
 Post subject:
PostPosted: August 25th, 2003, 8:34 
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Joined: August 23rd, 2003, 4:47
Posts: 9
Location: USA
Hi,

Thanks a lot, but if we replace the PCB the problem remains the same, the new pcb also works for the same time.

Can we replace the Motor Controller IC with any other equivalent so that the problem is not there.

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Naveen Agarwal

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Archive_Simjoe
 Post subject:
PostPosted: August 25th, 2003, 21:51 
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Joined: July 21st, 2003, 21:59
Posts: 17
Location: 中国江苏省南京市&
You can replace the pcb with motor controller is AN8428!
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Archive_format_b
 Post subject:
PostPosted: August 27th, 2003, 9:21 
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Joined: December 10th, 2002, 5:45
Posts: 15
Location: ========
For lct series from quantum, the only resolve is the replacement of TDA5247 (better PANASONIC) with a new one or a equivalent chip. You can trie resolder but is no guaranty that this will really improve the situation (the termic shock may be good for the chip).

My opinion about this tda5247-PHILIPS is that they are very bad fabricated, even the new chip (that I have, PHILIPS) ar ~40% BAD , so my conclusion is that the chip is destroyed by the time past due the fabrication not by the hours of functionality.
Anyone with similar experience please replay!!!!

Regards,
format_b
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Archive_microdot
 Post subject:
PostPosted: August 28th, 2003, 1:48 
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Joined: August 23rd, 2003, 4:47
Posts: 9
Location: USA
Can anybody suggest which IC we should use to replace the TDA5247HT.

We have quiet a few hdd stuck up in our stock.

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Naveen Agarwal

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Archive_MARCOS DANIEL
 Post subject:
PostPosted: February 2nd, 2004, 11:51 
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Joined: February 2nd, 2004, 9:02
Posts: 11
Location: BRASIL
He/she would LIKE to BUY TDA5247 (better PANASONIC) BECAUSE I HAVE DIFFICULTIES IN PURCHASE IF SOMEBODY HAS SOME INFORMATION FOR HONEYCOMB SUPPLIES ME:D
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Archive_Fred
 Post subject:
PostPosted: February 2nd, 2004, 18:04 
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Joined: July 4th, 2003, 19:11
Posts: 8
Location: Vienna
Please learn English ??? :cry: Otherwise nobody could help you in the right way :) One idea for tda5... whatsoever :;): search the internet for chip broker companies - I got mine approx. 140 pcs. by this way.
kind regards
Fred
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Archive_ranikola
 Post subject:
PostPosted: February 3rd, 2004, 4:06 
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Joined: November 6th, 2003, 4:18
Posts: 8
Location: Belgrade,Serbia
Re
It is hard to find panasonic chips everu day its harder and harder.
I will tell enyone where to order them if someone suplies me with ATHENA ,and Calipso Romulus ...sloution
Nikola

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Archive_cenahum
 Post subject:
PostPosted: February 3rd, 2004, 5:47 
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Joined: January 31st, 2004, 7:46
Posts: 5
Location: America
If is this that you all are looking for.......
TDA5247HT
TDA5247HT
AN8428GAK
AN8428NGAK
AN8428NGAK
AN8411SH
10012439
23400094
23400109
23400269
23400278
L2270
L2271
L6256
L6262
L6264
L6279
L250E New)
SH6782B
SH6770C
SH6950D
AMSRC0403
90G2018
Here is where you can buy:
http://softcom.freehosting.net
cenahum
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Archive_MARCOS DANIEL
 Post subject:
PostPosted: February 3rd, 2004, 7:28 
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Joined: February 2nd, 2004, 9:02
Posts: 11
Location: BRASIL
I thank all that will teach me
and he/she would like to buy some 20 pieces, if somebody is interested please they send me a letter
acasadashds@globo.com
thank you
marks daniel
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Archive_ranikola
 Post subject:
PostPosted: February 3rd, 2004, 17:10 
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Joined: November 6th, 2003, 4:18
Posts: 8
Location: Belgrade,Serbia
hi!
how much are yours panasonic I would like to bay all of them
Nikola

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adil123
 Post subject: lct 15
PostPosted: February 27th, 2007, 15:48 
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Joined: August 25th, 2005, 16:27
Posts: 5
hdd spin's and make two head noise and motor starts spin faster and head stops.
is this a pcb or head problem
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pepe
 Post subject:
PostPosted: February 27th, 2007, 20:25 
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Joined: October 3rd, 2005, 0:40
Posts: 1796
Location: Hungary
can be either one, first swap PCB to a known good one, if it remains the same then U've got bad luck (and head).

pepe
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