All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 26 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: DFL-FRP PCB REPAIRING
PostPosted: May 11th, 2018, 9:33 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
Hi
very simple question i have DFL -FRP , not giving power out on SATA port (channal zero )
its very hard to send it back to china,

can someone help me here,


Attachments:
20180511_182424.jpg
20180511_182424.jpg [ 1.15 MiB | Viewed 7569 times ]
20180511_182453.jpg
20180511_182453.jpg [ 1.46 MiB | Viewed 7569 times ]
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 11th, 2018, 15:19 
Offline

Joined: May 31st, 2015, 1:47
Posts: 32
Location: Brasil
Hi,

What is write in U1 component ( reference ) ?

Regards.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 11th, 2018, 15:21 
Offline
User avatar

Joined: November 24th, 2013, 18:13
Posts: 412
Location: Poland
This is LM2678 DC converter National Semiconductors. Author let check F1 and F2.
Then Check Power supply on U1 LM2678.

_________________
Hello everyone, sorry for my english, because am using google translator.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 11th, 2018, 18:30 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
U1 would be the +5V supply. This supply would be common to both the IDE and SATA channels. Also, U1 would be the source for the secondary supplies (for the logic). Therefore, I can't see a problem here.

F1 - F4 appear to be polyswitches or polyfuses (resettable fuses).

I would measure the voltages at those pins that are marked with squares.

Can you tell us the markings on Q1?

IRFR5305, International Rectifier, HEXFET, P-ch, -55V, -31A, RDS(on) = 0.065 ohm, 110W, D-Pak:
https://www.infineon.com/dgdl/irfr5305. ... 324d0820fd

LM2678, Texas Instruments / National Semiconductor, Step-Down switching Regulator, 5A, 8V - 40Vin:
http://www.ti.com/lit/ds/symlink/lm2678.pdf


Attachments:
DFL-FRP_SATA-power.jpg
DFL-FRP_SATA-power.jpg [ 570.45 KiB | Viewed 7508 times ]

_________________
A backup a day keeps DR away.
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 12th, 2018, 4:33 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
Code:
                         +12V
                           +
                           |
                       .---+---.
                       |       |
                      .-.      |
               R6/R11 | |      |
                      | |      |
                      '-'      |
                       |       |
                       |  G    | S
                       +----||-+   Q5/Q10
                       |    ||->  IRFR5305
                Q6/Q11 |    ||-+
  SATA/IDE    ___    |/        | D    F2/F4
  power  o---|___|---|         |     _
  on/off             |>        '----o \_/o---o  +12V
  from       R7/R12    |                        output
  logic                |             poly-   o
  PCB                  |            switch   |
                      ===                   ===
                      GND                   GND

Code:
                      +5V        +12V           +5V
                       +          +              +
                       |          |              |
                      .-.        .-.             |
               R1/R?? | |        | | R2/R9       |
                      | |        | |             |
                      '-'        '-'             |
                       |          |              |
                       |          |              | D
                       +----.     +-----------||-+  Q1/Q7
                       |    |     |         G ||<- 
                Q2/Q9  |    |     | Q6/Q8     ||-+
  SATA/IDE    ___    |/     |   |/               | S   F1/F3
  power  o---|___|---|      '---|                |       _
  on/off             |>         |>               '----o_/ \o---o +5V output
  from       R5/R10    |          |
  logic                |          |                   poly-    o
  PCB                  |          |                   switch   |
                      ===        ===                          ===
                      GND        GND                          GND

Logic 1 = power ON
Logic 0 = power OFF

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 12th, 2018, 4:45 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
when i opened the box first time i saw 3 capacitor damage. i replace three capacitors , original value was 10v 2200uf,and a replace with 10v 1000uf .but result is same .can it be cause of capacitors .


Attachments:
20180511_182424.jpg
20180511_182424.jpg [ 1.17 MiB | Viewed 7388 times ]
DSC09929.JPG
DSC09929.JPG [ 3.79 MiB | Viewed 7390 times ]
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 12th, 2018, 10:01 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
Can you show us the other side of the PCB? Can you also show us both sides of the logic PCB?

Can you tell us all the markings on the original and replacement capacitors? Something doesn't look right ...

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 13th, 2018, 14:22 
Offline

Joined: August 13th, 2016, 17:10
Posts: 73
Location: Vienna, Austria
Abdul Rauf wrote:
when i opened the box first time i saw 3 capacitor damage. i replace three capacitors , original value was 10v 2200uf,and a replace with 10v 1000uf .but result is same .can it be cause of capacitors .


Hmm, 1000uf is less than half the capacity of 2200uf, which could be the cause for problems, yes. But it's a bit strange that you do not get any power output. Did you make sure that you mounted them in the right direction?


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 13th, 2018, 14:56 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
sourcerer wrote:
Did you make sure that you mounted them in the right direction?

The polarity stripes on the caps are consistent with the "+" indicators on the silkscreen.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 13th, 2018, 15:14 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
sourcerer wrote:
Hmm, 1000uf is less than half the capacity of 2200uf, which could be the cause for problems, yes.

I don't think that there is any requirement for capacitors at each of the +5V and +12V outputs. In fact I don't understand their purpose (other tools don't have them). However, the capacitor at the 5V regulator should be a low ESR, 105 degC type.

Moreover, the capacitor at the 12V input appears to be a 10V type, so something could be seriously wrong here.

I'm also waiting to see the logic PCB so that I can determine whether it is safe to connect +5V directly to the on/off control pins (for testing purposes). However, the OP's responses so far would suggest that visual inspection may be the limit of his troubleshooting ability. :-(

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 4:42 
Offline

Joined: December 29th, 2015, 14:38
Posts: 41
Location: Heaven
hello abdul rauf , i never worked on this PCB but visually what i understand that is same as fzabkar already told you, so i would advice you to follow fzabkar instructions. addition from my side is = did you use new capacitors ?
2nd choose 105 degree caps 2200uF /16V( you can find RUBYCON or UNICON caps in local market easily ) 3rd when you turn on power from software you have to check if SATA control pin is high or low ? you will need to look other side too . 4th its possible connector from its motherboard or main PCB is loose or bad contact. i assume the input power supply is good ( i mean current not Volts ). right ? because you already mentioned IDE port is good . MOSFETs are good too ?


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 6:46 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
fzabkar wrote:
Can you show us the other side of the PCB? Can you also show us both sides of the logic PCB?

Can you tell us all the markings on the original and replacement capacitors? Something doesn't look right ...


Attachments:
DSC09941.JPG
DSC09941.JPG [ 4.83 MiB | Viewed 5830 times ]
DSC09939.JPG
DSC09939.JPG [ 4.79 MiB | Viewed 5830 times ]
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 6:50 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
pikus_09 wrote:
This is LM2678 DC converter National Semiconductors. Author let check F1 and F2.
Then Check Power supply on U1 LM2678.


Attachments:
DSC09952.JPG
DSC09952.JPG [ 4.12 MiB | Viewed 5827 times ]
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 6:54 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
Abdul Rauf wrote:
pikus_09 wrote:
This is LM2678 DC converter National Semiconductors. Author let check F1 and F2.
Then Check Power supply on U1 LM2678.


Attachments:
DSC09955.JPG
DSC09955.JPG [ 4.06 MiB | Viewed 5822 times ]
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 7:02 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
fzabkar wrote:
Can you show us the other side of the PCB? Can you also show us both sides of the logic PCB?

Can you tell us all the markings on the original and replacement capacitors? Something doesn't look right ...


Attachments:
DSC09943.JPG
DSC09943.JPG [ 4.78 MiB | Viewed 5820 times ]
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 16:10 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
I can't see all the markings on the bad capacitor (can you tell us what they are?), but I'm assuming its a ZLH series Rubycon. If so, then all the caps have good specs, in which case I can only assume that DFL was stung by a bad batch, or maybe even fakes (?).

It would be difficult to measure the test points when the unit is assembled. However, the power board can be tested on its own if a jumper wire is added between the +5V supply and the SATA on/off control pin.

I also can't see the markings on the N-ch MOSFET (Q1). Can you tell us what they are?

BTW, the pushbutton switch looks like it needs replacing.


RGEF500, Littelfuse, PTC Polyswitch, 16V, 5A, marking X16 GF500:
http://m.littelfuse.com/~/media/electronics/product_specifications/resettable_ptcs/littelfuse_ptc_rgef500_product_specification.pdf.pdf
http://m.littelfuse.com/~/media/electronics/datasheets/resettable_ptcs/littelfuse_ptc_rline_catalog_datasheet.pdf.pdf

MCZ series, Rubycon, low ESR, high ripple current, 105 degC, aluminium electrolytic (10V, 1000uF):
http://www1.futureelectronics.com/doc/RUBYCON/6.3MCZ820M8X11.5.pdf

ZLH series, Rubycon, low impedance, 105 degC, aluminium electrolytic (25V, 680uF):
http://www.rubycon.co.jp/en/catalog/e_pdfs/aluminum/e_zlh.pdf


Attachments:
DFL-FRP_SATA-power.jpg
DFL-FRP_SATA-power.jpg [ 628.65 KiB | Viewed 5397 times ]

_________________
A backup a day keeps DR away.
Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 16:28 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
Here are my guesses as to the identities and functions of the ICs on the logic PCB:

    U1/U12 = 24Cxx
    U2/U13 = CY7C68013A
    U3 = XR22404
    U4 = 8-bit microcontroller ?
    U5 = ?
    U6 = ?
    U7/U8 = LDO regulator or load switch ?
    U9 = transceiver ?
    U10 = FT232R
    U11 = 88SA8040 / 88SA8052
    U14 = 3.3V LDO regulator
    X2 = 12MHz
    X6 = 25MHz

CY7C68013A, Cypress, EZ-USB FX2LP USB 2.0 Microcontroller, 3.3V, 100-pin TQFP:
http://www.cypress.com/file/138911/download

XR22404, Exar, USB 2.0 4-port hub, 5V or 3.3V, 12MHz:
https://www.exar.com/ds/xr22404.pdf

FT232R, FTDI, USB 2.0 UART, SSOP-28:
http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232R.pdf

88SA8040 / 88SA8052, Marvell, IDE-SATA bridge:
http://www.psdevwiki.com/ps3/images/a/a7/Marvell_88SA8040-TBC1-pinout.jpg
http://www.psdevwiki.com/ps3/images/b/b6/Marvell_88SA8052-pinout.png
http://www.psdevwiki.com/ps3/images/5/54/Marvell_88SA8040-TBC1.jpg

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 19:01 
Offline

Joined: December 29th, 2015, 14:38
Posts: 41
Location: Heaven
It would be difficult to measure the test points when the unit is assembled. However, the power board can be tested on its own if a jumper wire is added between the +5V supply and the SATA on/off control pin.


Its good idea ..... . he can also add a resistor (limiter) +5 to Gate.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 14th, 2018, 20:11 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10838
Location: Australia
mad4hdd wrote:
Its good idea ..... . he can also add a resistor (limiter) +5 to Gate.

The logic board drives the power board directly, without limiting resistors. ISTM that R5 and R7 are sufficiently large so as to limit the base current into Q3 and Q6.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: DFL-FRP PCB REPAIRING
PostPosted: May 15th, 2018, 2:50 
Offline
User avatar

Joined: May 6th, 2013, 2:48
Posts: 60
I also can't see the markings on the N-ch MOSFET (Q1). Can you tell us what they are?


Attachments:
DSC09949.JPG
DSC09949.JPG [ 3.56 MiB | Viewed 4893 times ]
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 26 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group