Psp E1000 Led Driver Circuit Component Replacement Repair Guide

Difficulty

Difficult

Steps

2

Time Required

                          1 hour            

Sections

1

• Backlight electronic after water damage
• 2 steps

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Introduction

I found the PSP was working exept the LCD backlight.

So I disassambled the device and searched for water marks. I found the marks directly on the LED driver circuit. After cleaning and checking the 0.5A fuse (was OK) I dicided to find out the chip. It took me some time to find the correct chip. It was a TB62752AFUG LED driver. It’s a step up converter with current output. It can deliver up to 40V.

Because I cound not find out, which device was broken, I ordert all part (exept the resistors) reworked them.

After reassabling the whole device, the backlight was working fine again and my nephew was happy.

What you need

Step 1

              Backlight electronic after water damage               

• this picture was made after cleaning

this picture was made after cleaning

1024

Step 2

• it took me some time to find the right chip:
• 1 - TB62752AFUG
• 2 - Inductor 22µH/0.66A
• 3 - MSS1P4-M3/89A
• 4 - 2.2µF / 6,3V
• 5 - Fuse 0.5A 0603
• 6 - 1.0µF / 50V
• 7 - Ferrite bead 30Ohm/3A

it took me some time to find the right chip:

1 - TB62752AFUG

2 - Inductor 22µH/0.66A

3 - MSS1P4-M3/89A

4 - 2.2µF / 6,3V

5 - Fuse 0.5A 0603

6 - 1.0µF / 50V

7 - Ferrite bead 30Ohm/3A

Cancel: I did not complete this guide.

                                                                                      10 other people completed this guide.                                             

Attached Documents

• TB62752AFUG_datasheet_ja_20110.pdf
• PDF - 395.25 kb
• View
• TB62752AFUG_datasheet_en_20110.pdf
• PDF - 245.99 kb
• View

TB62752AFUG_datasheet_ja_20110.pdf

PDF - 395.25 kb

TB62752AFUG_datasheet_en_20110.pdf

PDF - 245.99 kb

Author

                                      with 2 other contributors 

                    Steven                     

Member since: 05/06/2014

380 Reputation

                                      1 Guide authored                  



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Maxim Desormeaux - Jun 19, 2016

Reply

Yo do repairs?

Hoang Binh - May 10, 2021

Reply

Hi Steven,

Thank for your guide. It helped me restore my PSP street (in my case, the fuse was broken). But one more problem is my PSP street has no sound on speaker, but has sound on headphone. Can you give me a glue to fix?

Thank you.

Hoang Binh - May 21, 2021

I fixed it! There a broken fuse near the audio ic. Hooray!!!

Olivian - Nov 8, 2021

Hello Hoang Binh, I have the same problem as you, after changing the fuse to illuminate the display, no sound is heard through the speaker (only when connecting headphones, through them). Can you tell me, please, which is the fuse has been changed to solve the sound problem? An image whit the fuse be very helpful.

Hoang Binh - Dec 26, 2021

Reply

Hi @olivian. Sorry for late reply. I didn’t take any picture so I cannot point it out exactly. But you can find it yourself. Fuses often have a letter F or FB on it or its color is blue.