查看完整版本: magic tv 3000火牛壞左

mastertak 2010-2-25 04:54 PM

magic tv 3000火牛壞左

有冇Ching提供原廠以外既火牛

cody2k 2010-2-25 05:15 PM

去鴨記搵隻 NEWSTAR NSC-8 萬用牛代替啦, ok架.
Set去12V就啱MTV3000用.

圖:
[img]http://i693.photobucket.com/albums/vv293/Cody2k/ZZ/NEWSTARNSC-8.jpg[/img]

[[i] 本帖最後由 cody2k 於 2010-2-25 05:18 PM 編輯 [/i]]

mastertak 2010-2-25 07:05 PM

[quote]原帖由 [i]cody2k[/i] 於 2010-2-25 05:15 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241792416&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
去鴨記搵隻 NEWSTAR NSC-8 萬用牛代替啦, ok架.
Set去12V就啱MTV3000用.

圖:
[img]http://i693.photobucket.com/albums/vv293/Cody2k/ZZ/NEWSTARNSC-8.jpg[/img] [/quote]

多謝Ching

GNIKCUF_YOU 2010-2-25 10:20 PM

[quote]原帖由 [i]cody2k[/i] 於 2010-2-25 17:15 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241792416&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
去鴨記搵隻 NEWSTAR NSC-8 萬用牛代替啦, ok架.
Set去12V就啱MTV3000用.

[/quote]

Switching 牛, 好過原裝果隻啦 !

dumm699 2010-2-25 10:52 PM

[quote]原帖由 [i]cody2k[/i] 於 2010-2-25 05:15 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241792416&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
去鴨記搵隻 NEWSTAR NSC-8 萬用牛代替啦, ok架.
Set去12V就啱MTV3000用.

圖:
[img]http://i693.photobucket.com/albums/vv293/Cody2k/ZZ/NEWSTARNSC-8.jpg[/img] [/quote]

[img]http://www.tradeeasy.com/photo/seller/28996/lgraphic/goldenedge3009.jpg[/img]

2A is better
[url=http://www.weclonline.com/tchi/enlarge_photo.asp?id=50129661]http://www.weclonline.com/tchi/enlarge_photo.asp?id=50129661[/url]

[[i] 本帖最後由 dumm699 於 2010-2-25 11:05 PM 編輯 [/i]]

imtbck 2010-2-26 11:17 AM

I heard that before, someone said if you choice a 12v 火牛with a higher amp, say 4 or 5A ouput, it will have a better pic & sound quality ....

I also use MagicTV 3000, now i also wanted to buy a higher ampere 火牛 later to see what happen...

yeungph 2010-2-26 12:13 PM

買12V 定壓牛,有隻Mitec靚料。可以search下。

mgc1216 2010-2-26 01:16 PM

[quote]原帖由 [i]imtbck[/i] 於 2010-2-26 11:17 AM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241872540&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
I heard that before, someone said if you choice a 12v 火牛with a higher amp, say 4 or 5A ouput, it will have a better pic & sound quality ....

I also use MagicTV 3000, now i also wanted to buy a hi ... [/quote]
冇乜理由因為火牛 Amp 數大就會令畫面靚啲。

dumm699 2010-2-26 02:09 PM

[quote]原帖由 [i]mgc1216[/i] 於 2010-2-26 01:16 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241884486&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]

冇乜理由因為火牛 Amp 數大就會令畫面靚啲。 [/quote]
C兄 200% 正確,最重要穩定。原本 12VDC 1.5A容易死,假如不加 HDD ,比多 30% 已足夠。所以 2A 會穩定啲

yeungph 2010-2-26 03:45 PM

Switch 牛寫住2Amp,唔等於所有DC V都係出2A。通常係指最低DC V出2A:smile_42: :smile_42:

mgc1216 2010-2-26 03:53 PM

[quote]原帖由 [i]yeungph[/i] 於 2010-2-26 03:45 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241897717&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
Switch 牛寫住2Amp,唔等於所有DC V都係出2A。通常係指最低DC V出2A:smile_42: :smile_42: [/quote]
你意思係 可選電壓輸出 (selectable voltage output) 嘅牛…

yeungph 2010-2-26 03:57 PM

[quote]原帖由 [i]mgc1216[/i] 於 2010-2-26 03:53 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241898523&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]

你意思係 可選電壓輸出 (selectable voltage output) 嘅牛… [/quote]係,無錯。:loveliness:

mgc1216 2010-2-26 04:05 PM

[quote]原帖由 [i]yeungph[/i] 於 2010-2-26 03:57 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241898888&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
係,無錯。:loveliness: [/quote]
純粹閒談。上面幅 Super 圖寫著 100-240V 0.58A, input power full load 時最低都 58W﹐output voltage 最高12V﹐就算俾足 2A 都係24W﹐應該做得到有餘。所以呢隻應該可以用。

yeungph 2010-2-26 06:05 PM

[quote]原帖由 [i]mgc1216[/i] 於 2010-2-26 04:05 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241899678&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]

純粹閒談。上面幅 Super 圖寫著 100-240V 0.58A, input power full load 時最低都 58W﹐output voltage 最高12V﹐就算俾足 2A 都係24W﹐應該做得到有餘。所以呢隻應該可以用。 [/quote]AC current(A)唔可以完全轉化為DC current(A)。可switching AC/DC power supply上所標示既DC currect係指某一DC電壓,而且通常係指最低電壓。
比個例子大家睇下。
[url=http://www.alibaba.com/product-gs/213365270/AC_DC_Power_Supplies.html]http://www.alibaba.com/product-gs/213365270/AC_DC_Power_Supplies.html[/url]

mgc1216 2010-2-26 06:23 PM

但 minimum 58W input power 跌到 maximum 24W DC output, 得箇 45% efficiency, 唔洗 switch mode, 以前啲鐵片牛都做到啦﹗所以我對呢隻 Super 有信心 :L

mgc1216 2010-2-26 06:44 PM

[quote]原帖由 [i]yeungph[/i] 於 2010-2-26 06:05 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241910938&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
比個例子大家睇下。
[url=http://www.alibaba.com/product-gs/213365270/AC]http://www.alibaba.com/product-gs/213365270/AC[/url] ... [/quote]
呢個例子唔係好好。呢隻 PS 係可以三組電壓一齊出(就好似 PC 啲 PS 咁)﹐亦已標明每組電壓出嘅 max 電流 (係每組~16W﹐total output max out at 50W)  Power Efficiency 係 86%! 咁先似 SMPS 嘛。

話說回來﹐隻 Super efficiency 咁低﹐好有可能係鐵片牛。有冇 ching 有﹖重唔重手﹖

[[i] 本帖最後由 mgc1216 於 2010-2-26 06:54 PM 編輯 [/i]]

dumm699 2010-2-26 07:01 PM

[quote]原帖由 [i]mgc1216[/i] 於 2010-2-26 06:44 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241913676&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]

呢個例子唔係好好。呢隻 PS 係可以三組電壓一齊出(就好似 PC 啲 PS 咁)﹐亦已標明每組電壓出嘅 max 電流 (係每組~16W﹐total output max out at 50W)  Power Efficiency 係 86%! 咁先似 SMPS 嘛。

... [/quote]
[url=http://www.weclonline.com/downloads/pdf/71-01-8320.pdf]http://www.weclonline.com/downloads/pdf/71-01-8320.pdf[/url]

mgc1216 2010-2-26 07:09 PM

講明係 switch mode 都得咁低效率﹐無話可說 :smile_42:

yeungph 2010-2-26 08:30 PM

:smile_30: :smile_30: 總之無論電子牛又好大鐵牛都好,憑係呢種可調DC電壓既牛,一係寫晒咁多個電壓既current,否則佢標一個出黎通常都係指最低電壓個current。:loveliness:

dumm699 2010-2-26 11:52 PM

[quote]原帖由 [i]yeungph[/i] 於 2010-2-26 08:30 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241921769&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
:smile_30: :smile_30: 總之無論電子牛又好大鐵牛都好,憑係呢種可調DC電壓既牛,一係寫晒咁多個電壓既current,否則佢標一個出黎通常都係指最低電壓個current。:loveliness: [/quote]
驚冇力買呢隻
[img]http://i.ebayimg.com/15/%21BlvlmDgB2k%7E$%28KGrHqMOKikEtlYK%21F9cBLc2rl,Fwg%7E%7E_12.JPG[/img]

[url=http://www.weclonline.com/tchi/productdetail.asp?id=50114128#]http://www.weclonline.com/tchi/productdetail.asp?id=50114128#[/url]

mastertak 2010-2-27 01:28 AM

[quote]原帖由 [i]yeungph[/i] 於 2010-2-26 03:45 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241897717&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
Switch 牛寫住2Amp,唔等於所有DC V都係出2A。通常係指最低DC V出2A:smile_42: :smile_42: [/quote]

Ching 咁我以經買左2amp囉,而家系米會不夠火數.

mgc1216 2010-2-27 01:51 AM

[quote]原帖由 [i]mastertak[/i] 於 2010-2-27 01:28 AM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241959419&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]
Ching 咁我以經買左2amp囉,而家系米會不夠火數. [/quote]
影張相出嚟睇吓!

byebye兄 2010-2-27 01:59 AM

可以買LCD火牛, 好多有3A以上出力

二手拍賣未議價$80philips(hipro廠) 12V 3.33A, 有時見$50都有隻
[url=http://hk.f2.page.auctions.yahoo.com/hk/auction/b14528261]http://hk.f2.page.auctions.yahoo.com/hk/auction/b14528261[/url]

要留意插頭有大有細

[[i] 本帖最後由 byebye兄 於 2010-2-27 02:05 AM 編輯 [/i]]

yeungph 2010-2-27 09:03 AM

[quote]原帖由 [i]dumm699[/i] 於 2010-2-26 11:52 PM 發表 [url=http://www26.discuss.com.hk/redirect.php?goto=findpost&pid=241946202&ptid=11625518][img]http://www26.discuss.com.hk/images/common/back.gif[/img][/url]

驚冇力買呢隻
[url=http://i.ebayimg.com/15/%21BlvlmDgB2k%7E]http://i.ebayimg.com/15/%21BlvlmDgB2k%7E[/url]$%28KGrHqMOKikEtlYK%21F9cBLc2rl,Fwg%7E%7E_12.JPG

[url=http://www.weclonline.com/tchi/productdetail.asp?id=50114128#]http://www.weclonline.com/tchi/productdetail.asp?id=50114128#[/url] [/quote]拿,呢隻就夠食力啦。點計都夠:loveliness:,不過價錢當然高D啦。

yeungph 2010-2-27 09:06 AM

[quote]原帖由 [i]mastertak[/i] 於 2010-2-27 01:28 AM 發表 [url=http://www26.discuss.com.hk/redirect.php?goto=findpost&pid=241959419&ptid=11625518][img]http://www26.discuss.com.hk/images/common/back.gif[/img][/url]


Ching 咁我以經買左2amp囉,而家系米會不夠火數. [/quote]咁雖然MTV隻原裝牛係大D數,不過唔可能用到盡,用盡就好危險。你依家用緊無問題唔過熱都用得,當然安全計都係我樓上話頭買隻大A定壓12V牛最好啦。

yeungph 2010-2-27 09:08 AM

[quote]原帖由 [i]byebye兄[/i] 於 2010-2-27 01:59 AM 發表 [url=http://www26.discuss.com.hk/redirect.php?goto=findpost&pid=241962015&ptid=11625518][img]http://www26.discuss.com.hk/images/common/back.gif[/img][/url]
可以買LCD火牛, 好多有3A以上出力

二手拍賣未議價$80philips(hipro廠) 12V 3.33A, 有時見$50都有隻
[url=http://hk.f2.page.auctions.yahoo.com/hk/auction/b14528261]http://hk.f2.page.auctions.yahoo.com/hk/auction/b14528261[/url]

要留意插頭有大有細 [/quote]無錯,好多LCD牛都好靚,但如ching所講要留意個插頭岩唔岩。

poorguys 2010-2-27 10:27 AM

[quote]原帖由 [i]mastertak[/i] 於 2010-2-27 01:28 AM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241959419&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]


Ching 咁我以經買左2amp囉,而家系米會不夠火數. [/quote]
Don't worry
1. Can it power up? (check inner positive and outer negative before plug-in!!!)
2. If it can power up, continue to use it. Then check the surface temperature of power supply in first 3 mins, 15 mins and 1 hour with your hand. If you feel it is only warm would be okay, but if it is very hot than it might be marginal.

mastertak 2010-2-27 11:19 AM

[quote]原帖由 [i]dumm699[/i] 於 2010-2-26 11:52 PM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241946202&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]

驚冇力買呢隻
[url=http://i.ebayimg.com/15/%21BlvlmDgB2k~]http://i.ebayimg.com/15/%21BlvlmDgB2k%7E[/url]$%28KGrHqMOKikEtlYK%21F9cBLc2rl,Fwg%7E%7E_12.JPG

[url=http://www.weclonline.com/tchi/productdetail.asp?id=50114128#]http://www.weclonline.com/tchi/productdetail.asp?id=50114128#[/url] [/quote]

禽日下晝係科學園攞番部機就到深水埗買左Supper SP320,

mastertak 2010-2-27 11:28 AM

[quote]原帖由 [i]poorguys[/i] 於 2010-2-27 10:27 AM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241977763&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]

Don't worry
1. Can it power up? (check inner positive and outer negative before plug-in!!!)
2. If it can power up, continue to use it. Then check the surface temperature of power supply in first 3 ... [/quote]

A little bit hot around the power lamp is felt and the shelf is a little warm. As recommended by Ching above.  I will change another power unit which is for lcd monitor used.

poorguys 2010-2-27 12:25 PM

[quote]原帖由 [i]mastertak[/i] 於 2010-2-27 11:28 AM 發表 [url=http://digital.discuss.com.hk/redirect.php?goto=findpost&pid=241983081&ptid=11625518][img]http://digital.discuss.com.hk/images/common/back.gif[/img][/url]


A little bit hot around the power lamp is felt and the shelf is a little warm. As recommended by Ching above.  I will change another power unit which is for lcd monitor used. [/quote]
You can easy buy those new item (old stock) at Un Chau Street; New Golden  1/F & 2/F two to three shops selling it, range from $55-89. Many choices, but make sure the DC plug is fit with your MTV.( bring your old failure PSU to compare!!!)
頁: [1] 2
查看完整版本: magic tv 3000火牛壞左