送給愛動手的網友,希望對你們有幫助。很多東西看起來複雜,實際上並不那樣。試了成功了第一次,你就會有第二次。如果不去試一次,那就永遠沒有成功的第一次。
1. Laptop:
症狀:在2015年,用了近10年的 laptop 不能顯示了。下圖裏,注意在照相機的閃光燈下還可看到微弱的字在屏幕上。因為2005年出的laptop是LCD熒光屏,它需要ccfl(cold cathode fluorescent lamps) deliver consistent lighting across the display。它壞了,所以熒光屏不亮了。
![](/upload/album/50/80/03/3b1517267522kiyr1nqA.jpg)
eBay上買了一個 ccfl backlight (你得按照你的laptop屏的尺寸買)around $10
例如:
https://www.ebay.com/itm/404224231633?hash=item5e1da448d1:g:O4oAAOSwbrldA1X3&amdata=enc%3AAQAIAAAA4Jkb%2BKWERT2DvLpMW0olp%2BxPT0CKTyjr3NQmFUa1pvzcb3UFUEXvQGpK4MPln8YM0OiZ1rODn2%2FUCgx3vsUJnfneFdm3ZucuQwSFLUez0%2FhUaTRHLc08pt1gAMf%2FeSWO5TFco%2F253%2BdXuyO32vNSmor5pR6iTLZa6ltarkcJ4YgKtfHhPkpk%2FR9EaVltH4GTNNRkWaJ%2F7GRZxM6jftfjDPbsnVmkYw%2BpPpjVA%2F5pbCAFY60Q9wL3RzHsKBEerfG0VRL6lPySYHemardf0Etw3fXt9O8fEmGmwgIY%2FplnEdHC%7Ctkp%3ABk9SR-Si3bjvYQ (你得按照你的laptop屏的尺寸買):
我的:
![](/upload/album/50/80/03/3b15172682246P6IF1ky.jpg)
拆下舊的,換上新的:
![](/upload/album/50/80/03/3b1517268432wg0YDK5g.jpg)
就成功了:
![](/upload/album/50/80/03/3b1517268500Gok3aZgQ.jpg)
2. DSLR (digital single lens reflex) Camera.
起因:拍Pelican時,一個浪打到camera上,因為是海水,海水裏有鹽,會腐蝕相機裏的線路板,所以必須清除裏麵的海水。拆了DSLR camera:
![](/upload/album/50/80/03/3b1517268664N78NMqvw.jpg)
![](/upload/album/50/80/03/3b1517268693ayHqdvLe.jpg)
隻有一點水進去了,擦幹了。相機就沒事了。
3. DSLR相機的電池。電池很貴$30-40 a piece. 可以修,換裏麵的電池,比買新的便宜。
用刀切開外殼,
![](/upload/album/50/80/03/3b1517269410aw5HFxgW.jpg)
上圖上方上的電池是我換上的新電池,下方是用原來拆下來的好電池。用glue gun封好,用刀切平:
![](/upload/album/50/80/03/3b1517269686efl8ErDE.jpg)
Tip for choosing a cylinder-shaped lithium -ion battery:
常用的lithium ion battery nomenclature: diameter (two digits) in mm +length (two digits) in mm.
such as battery 18650, means the diameter is 18 mm, the length is 65 mm。
![](/upload/album/50/80/03/3b1517260227iHIsXFgJ.jpg)
4. 換了MP3 player裏的電池:
症狀:電池充不上電:
打開外殼,用吉他的picks:
https://www.ebay.com/itm/295233264431?hash=item44bd461b2f:g:MAgAAOSwS41fIO-s&amdata=enc%3AAQAIAAAA4I%2FC6YAWKXIc1xfAnR%2FAxLjlKKekYw9pzdm8ehpLePFJMYvAknd9CTVrfO13JUfEJs%2FpweQ9TCfOKGwmqKlG%2FnhYjWIPv0j65Bg9FVX85rBWPfM5oGR%2FtDo6slviTlUYl%2FRjkdp1G7JI96SZcaCraljGgJe2H7c8qnzFwP2DyKpBUcx4LnH%2FkCV1EyCk5%2FUfYuMihMaxYew0yZU7IGqG7RkxtNIsNcRcm%2FvCV3MLNBtgdhVGXGNazDV2vCl67iZnd%2FZYt57UgubhAteUtc2beiSis1aOSSYrDlEXIiS39XAl%7Ctkp%3ABFBM4Ljbu-9h
![](/upload/album/aa/c9/53/66f258ec3796jj104L55.jpg)
原裝電池:
![](/upload/album/aa/c9/53/66f258ec388512gwn4FR.jpg)
換上403450 電池:
https://www.aliexpress.us/item/2251832717902131.html?spm=a2g0o.productlist.main.1.69553eab95QY3T&algo_pvid=028cb724-8724-4b4e-b370-53bdb2e5c1f3&algo_exp_id=028cb724-8724-4b4e-b370-53bdb2e5c1f3-0&pdp_npi=3%40dis%21USD%216.88%214.47%21%21%21%21%21%402102172f16814081566815588d06fd%2165856197961%21sea%21US%21133992279&curPageLogUid=3DiXa2XIBstC
![](/upload/album/aa/c9/53/66f258ec3937BjFo1FLg.jpg)
換好後,把殼裝好: 下圖是網上的:
Tip for choosing a rectangular-shaped lithium ion battery:
1. Dimension.
2. Ah (安培小時)。Choose battery's Ah as close as possible to the original one.
![](/upload/album/aa/c9/53/66f258ec1357jmd7Vfan.jpg)
nomemclature: thickness (one digit) in mm, width (two digits) in mm, length (two digits) in mm.
example battery 403450 (我用的,不是上圖的): 4 mm in thickness, 34 mm in width and 50 mm in length.
5. 換了camera裏的一個開關:
症狀:向上滑動(下圖裏camera的右上角的大黑塊)應該讓相機工作的開關不能讓camera工作。
是開關壞了,得修。
camera 和開關(camera下邊的兩個小黑東西):
![](/upload/album/aa/c9/53/66f258ec2721TFfdNLUv.jpg)
下圖:左新的,右壞的。注意左邊的有一小杠杆,右邊的沒有,是壞掉了。大小不一樣,但作用一樣。在digikey買的,大概一個$2-3.
![](/upload/album/aa/c9/53/66f258ec2954M1UpHX7n.jpg)
6. DVD player
症狀:DVD player不工作,麵板上的 LED不亮。
The remote control is working (用remote control對著camera,按下remote control的任何一鍵,take a picture), 紫色點是remote control 發出的紅外線,人眼看不見,camera的sensor可以detect:
![](/upload/album/62/85/02/db1486976485aFbvphN8.jpg)
查了一下是power supply壞了,
原來壞了的(右邊的線路板):
![](/upload/album/f0/4f/90/7ab341214882mbrAiPO4.jpg)
Aliexpress買了一個
https://www.aliexpress.us/item/3256804160644273.html?spm=a2g0o.order_list.order_list_main.131.32ba1802oIPHE2&gatewayAdapt=glo2usa&_randl_shipto=US
$1.26+$2.61shipping, 14天到貨。
換上去新的power supply (右邊的線路板),因為小,底下加了一塊線路板(淺棕色):
![](/upload/album/f0/4f/90/7ab3412170803UJEsvkw.jpg)
修好了。
7. microwave oven:
症狀:Sharp carousel microwave oven, LCD display always has some problem in every 2 to 3 years, such as button 2 does not work this time.
![](/upload/album/c8/01/7a/6bf313520741yoHvWlBF.jpg)
拔掉電源線。用這樣的tool去open microwave oven的後蓋。
![](/upload/album/c8/01/7a/6bf313520893JXBjeAma.jpg)
https://www.harborfreight.com/security-bit-set-33-piece-68459.html
取下固定線路板的2個螺絲釘:
![](/upload/album/c8/01/7a/6bf313521235IfYGgl70.jpg)
取下的線路板:
![](/upload/album/c8/01/7a/6bf313521355T4bonB6R.jpg)
線路板反麵, 用酒精棉擦幹淨照片下部的線路板上的多個銅接觸點,等酒精蒸發掉,再把線路板裝回:
![](/upload/album/c8/01/7a/6bf313521434qjqLAZ99.jpg)
把後蓋裝好,就修好了 (in the key pad, key 2 could be used again):
![](/upload/album/34/b6/9a/714794221813YIUpIXB4.jpg)
8. Electric blower:
症狀: 插上電源,按開關,嗡嗡響兩三聲,motor不動.
是啟動電容壞了。
![](/upload/album/34/b6/9a/714794222540sLDSbNRI.jpg)
換下來的電容 (24 µF, 260 V AC) :
![](/upload/album/34/b6/9a/714794222589jX3UIAmU.jpg)
下圖是新的電容, bought from Amazon,用時把棕紅綠線焊在一起,兩根黑線焊在一起,電容並聯成15 µF。雖然電容量小於24 µF,但對交流電機啟動無影響。耐壓電壓相似(250 vs. 260 V AC),體積稍小,可以放在橙色外殼裏。
https://www.amazon.com/gp/product/B074W6BN2M/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
![](/upload/album/34/b6/9a/714794222944Exn8zre4.jpg)
換後就修好了。
9. ebay 上買了一個 AC motor speed control (幾年前 $3,現在 $11)。注意安全。絕對不推薦這個。因為交流線在輸入和輸出的結點處無很好的絕緣保護,容易觸電。
![](/upload/album/34/b6/9a/714794224064uf2f4sog.jpg)
https://www.ebay.com/itm/363353187159?hash=item549989a357:g:drAAAOSwsMpgb8UJ&amdata=enc%3AAQAIAAAA8PscDjC44U6m0yZcv2yjJLKVVvuQUOL%2FZ%2BoRPZmUSDNHOA1LZwcsqOg%2B%2B8poSjwRDNWknuHrwh8q70O0dGWsZQDIYHlUCQmmA6b9RwZqpq1QXL33jqqFM60bOpfZYRwoojzZXMnIkLa7O7FtvhDz3Th7E6KQhqc7xXw1%2BU3V83TZSA9RxqOrfuHuGRwN%2FSWaj35hX050r%2BGIImQa3wfCNOdaJ2Wg1fGjqbHy8qU64baIJmWHGOEUF2TGMqlvXAQvhwoZJL%2B16yS5klJ6axYemKAoBYXwFNOzO%2FWhBJimibw7n4eMii4Uf2dB7c%2FlXogrFg%3D%3D%7Ctkp%3ABk9SR4Dlu7fvYQ
給它裝上線:
![](/upload/album/34/b6/9a/714794223960rLjQl1LX.jpg)
就可以讓single speed AC motor 變速了:
![](/upload/album/34/b6/9a/714794224214hXmPajZg.jpg)
不推薦上2圖上的。下麵這個安全,不用自己裝線:
https://www.ebay.com/itm/255353936635?hash=item3b7447dafb:g:MDEAAOSwsw1h8euR&amdata=enc%3AAQAIAAAA0Oe%2FRppyV78jcwau4iMwx1Nmgg9Aho%2BW92AwNt1nq0I93Fxi5jdBywo3IhIXTHzdb6Fu7HjBk0cD80awXnWWTnrwN5XxkIlk5pKBCCks6XNIheF7hlOhiylWoSJoL1wIxSGvmpQvNGfybNPLorNyXqWEXDxVwRf5IhF2SlO6b53xvERHKzFgC5XtkHib4AQB0MAh9oIjZEs0QDhe6bTVb0xaeo1bmumZa4EGn6c%2FW4NnkyjM9%2BkGIsWR8WRM9aR3FnICakSqCN9jKpfqaMuffdY%3D%7Ctkp%3ABlBMUPzku7fvYQ
![](/upload/album/34/b6/9a/714794224840B7Elx9wj.jpg)
謝謝觀看。
|