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GIEC HDMI DVD modification by CD Classmate"BEN"(13

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kk_ho 發表於 2007-1-15 01:47:26 | 顯示全部樓層 |閱讀模式
Done by Classmate "BEN"  (13-Jan-2007)

Major modification on SMPS, the video board will be modification at later when the user change a new LCD TV.

SMPS:
Controller is Infineon ICE2A0565, for the lower switching loss and lower EMC radiation, KK will recommeded the user change the controller from 2A0565 to 2A2565, the temperature of the controller itself will be lower than before, and get highest efficiency and lower switching loss. The picture and sound quality will be a great improvement.

PS: only same brand can be make a replacement.


Modification:
China 1N4004 --> BYW54 (NXP)
China brand Y2 --> BC components Y2
China brand cap --> Sanyo OS-CON and Rubycon MBZ series
China brand Schottky diode --> ON semi. MBR41H100 S.Diode.

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hsun 發表於 2007-3-3 01:17:12 | 顯示全部樓層
可否詳細講解
 樓主| kk_ho 發表於 2007-3-3 14:26:18 | 顯示全部樓層
1. Change better X1 cap.
--> Improve the EMC performance

2. Change to BYW54 from 1N4001
--> Lower switching loss, lowe noise
--> Why not change fast recovery / high speed ? --> Please come to our course next time, it have brief explain.

3. Change the Infineon Coolset ICE2A0565 to ICE2A/3A 2565
--> Lower switching loss

4. Change diode to Schottky diode
--> Lower switching loss, lower heat

5. Change Cap to Low impedance Cap
--> Lower switching loss

KK.Ho
hsun 發表於 2007-3-4 02:23:07 | 顯示全部樓層
thank!
請問在那裡買? 型號及數量? 價錢多少?
 樓主| kk_ho 發表於 2007-3-4 02:55:52 | 顯示全部樓層
I will pass your info to admin, he will contact you soon.


Please tell me your model no. and more information about your machine.

K.K.HO
hsun 發表於 2007-4-7 18:43:41 | 顯示全部樓層
本人dvd 機為 GEC GK3288, 電源板如圖, 是否"磨"紅色圈部分, 請問1. 2. 3.紅色圈部分零件是什麼? 型號及數量? 在那裡買?價錢多少? 還有什麼地方要"磨"?THANK!

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