$ 5 Kho TV: 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:28

Muaj ib hnub zoo, kuv lub TV nres lub zog. Nws yog kev txaj muag txij li nws tsis yog hom tshiab, tab sis nws tseem zoo li muaj ntau lub neej nyob hauv nws mus txog qhov ntawd. Tom qab me ntsis tshawb nrhiav ib puag ncig, Kuv pom cov qauv no muaj teeb meem ib txwm muaj. Ob peb lub khw kho TV hais txog $ 200 lossis ntau dua rau kev ua haujlwm (thiab txawm tias lawv tsis paub tseeb tias lawv tuaj yeem kho nws hauv lub sijhawm hais qhia) thiab qhov ntawd zoo li txiav txim siab me ntsis uas ze rau tus nqi ntawm kev hloov chav tsev nws tus kheej, yog li kuv xav pom yog tias kuv tuaj yeem kho nws thiab khaws nws tawm ntawm cov khoom pov tseg. Spoiler ceeb toom: yog. Yog kuv ua tau. Raws li qhov sau tseg, Kuv yuav piav qhia me ntsis ntawm qhov kuv kho nws li cas, tab sis qhov no yog qhov qhia paub ntau ntxiv txog "kev tawv ncauj zoo" thiab nrhiav cov peev txheej zoo yog tias koj tsis tau txawj ua cov khoom zoo li no. Yog tias koj yog, koj twb paub ntau dua kuv. Kuv tinker, tab sis kuv tsis yog tus kws tshaj lij thiab tsis tau kawm txog hom haujlwm no. Qhov kuv vam tias yuav muab yog: 1) Yog tias koj xav khaws qee yam tawm ntawm cov thoob khib nyiab, tshwj xeeb yog lub thawv hluav taws xob loj, feem ntau ua haujlwm tau, ua siab tawv me ntsis. Is Taws Nem yog qhov zoo tshaj plaws thiab ntau tus neeg tau daws qhov teeb meem hauv cov qauv nrov ntawm cov neeg siv khoom siv hluav taws xob thiab sib qhia nws hauv cov ncauj lus kom ntxaws (zoo li ntawm Cov Lus Qhia). Qee lub sij hawm koj yuav tsum khaws cov khawb, tab sis nws yog qhov lom zem ua si.

2) Yog tias koj tsis muaj txuj ci los daws teeb meem qee yam, cov khoom tawg yog qhov zoo. Ua ntej, lawv tau tawg lawm yog li nws tsis zoo ib yam li kev sib cais lub TV ua haujlwm lossis lwm yam khoom, uas tuaj yeem pub dawb rau koj kawm yam tsis muaj kev nyuaj siab ntau. Qhov thib ob, yog tias koj siv nws ua lub luag haujlwm ua ntej, koj paub lub xeev twg koj tab tom rov qab los! Uas yog qhov zoo thiab muaj ciam teb ntau dua li tsim qee yam los ntawm kos. Yog li nrog qhov ntawd, cia peb dhia dej mus rau hauv dabneeg ntawm kuv Ntse LCD TV Qauv Qauv LC32D43U …

Kauj Ruam 1: Debug, Rho Tawm, & Nrhiav Cov Khoom Siv

Kuv pom cov vis dis aus luv luv no uas cuam tshuam txog peb tus qauv thiab ntau lwm tus tau ua tsis tiav ib yam nkaus. Yog li kuv xav tias nws tsim nyog txhaj tshuaj!

(Kuv xub siv qee qhov kev qhia tshwj xeeb los ntawm qhov txuas kuv tsis tuaj yeem qhib, tab sis txuas ntawm no ib qho twg yog tias nws ua haujlwm rau lwm tus lossis tom qab lub sijhawm.)

Yog li dab tsi? Cov qauv no muaj lub diode uas feem ntau ua tsis tiav hauv lub hwj chim, txhais tau tias lub TV uas seem yog tej zaum ua haujlwm tau zoo. Kuv tau ntsaws rau sab nraum qab ntawm kuv lub teeb nrog lub TV maj mam muab tso rau ntawm daim pam thiab txheeb xyuas thaj chaw uas kuv tab tom nrhiav pov thawj ntawm qhov tawg. Kuv tuaj yeem pom txaus kom ntseeg tau tias kuv cov teeb meem raug kev txom nyem tib yam li txhua lwm cov ntawv tshaj tawm thiab yuav cov khoom tsim nyog.

Tswv yim: Kuv pom zoo kom thaij duab ntawm qhov no ntawm koj cov teeb thaum nws tseem feem ntau muab tso ua ke yog li koj tuaj yeem xa mus rau lawv thaum txog lub sijhawm muab tso rov qab ua ke. Tsis tas li, muab tag nrho cov txiv ntseej & ntsia hlau rau hauv lub thawv me me! Koj yuav ua tsaug tom qab.

Kuv tau ua haujlwm los ntawm kev tshem tawm lub hwj chim los ntawm teeb (uas yog qhov tsim nyog lawm) tab sis nws tseem tso cai rau kuv mus taug kev li kuv tsis tau ua qhov muag hauv kuv chav tsev. Kuv muab cov khoom tawg hauv lub khob tupperware thiab taug kev hla lub nroog.

Ntsis: Muab qhov no yog kuv thawj zaug ua haujlwm los ntawm qhov teeb meem zoo li no, Kuv yuav khoom ntxiv. Txhua qhov ib feem yog qhov pheej yig thiab kuv xam yog tias kuv hlawv ib qho thaum siv cov khoom siv, Kuv xav tau lwm qhov ua ke.

Yog tias koj muaj teeb meem tib yam, ntawm no yog qhov txuas rau ob ntu kuv tau yuav los kho teeb.

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Cov lus qhia txog kev nyab xeeb: Kuv tau sab laj nrog tus phooj ywg nrog kev qhia hauv qhov chaw no ua ntej pib thiab xav qhia tib lub tswv yim nrog cov neeg mloog no: Ua ntej koj pib, koj paub ntau npaum li cas txog kev nyab xeeb nyob ib puag ncig cov khoom siv hluav taws xob? Koj puas tuaj yeem txheeb xyuas lub capacitors? (Hint: Lawv yog cov thooj voos kheej kheej nrog K lossis kev sib haum xeeb-kos npe saib tsis pom nyob rau sab saum toj). Cov Capacitors khaws lub zog, hauv paus raws li lub lim/tsis yog li lub zog tsis-huv huv los rau hauv koj lub cuab yeej los ntawm phab ntsa tuaj yeem ua kom du kom ua tau zoo, huv, muaj peev xwm txhim kho lub zog rau lub cuab yeej siv.

Qhov no tseem ceeb rau 2 qhov laj thawj:

a) Capacitors tuaj yeem khaws lub zog ib tuj. Hauv TV qub CRT qhov no yooj yim txaus los tua koj. Nrog cov LCDs, nws tseem txaus los muab rau koj kom ntxaws heev. Yam tsawg kawg, tso lub cuab yeej tshem tawm kom ntev li ntev tau ua ntej pib ua haujlwm. Qhov zoo tshaj koj yuav tso lawv. Cov ntaub ntawv zoo ntawm yuav ua li cas nyob ntawm no:

b) Cov laus capacitors tau paub tias ua tsis tiav. Ntau pawg los ntawm kwv yees li 2002 txog rau xyoo 2010 muaj teeb meem. Nws yog teeb meem loj dua nrog khoos phis tawj desktop, tab sis tsis yog tshwj xeeb rau cov khoos phis tawj. Saib https://en.wikipedia.org/wiki/Capacitor_plague. Yog tias lub kaus mom ntawm koj lub rooj saib xyuas zoo li ntawd, lawv yuav xav tau hloov.

Kho cov khoom yog qhov zoo! Ib txwm kuaj ob zaug tias koj nyob nyab xeeb

Kauj Ruam 2: Tshem Cov Khoom Raug Rho Tawm

Thaum koj paub meej txog kev nyab xeeb, kev hloov pauv tiag tiag tsis nyuaj. Txhua yam tau dhau los ntawm lub qhov ntsia thiab muab tso rau hauv qhov chaw. Kev tshem tawm tsuas yog ib qho teeb meem ntawm desoldering, tshem cov khoom qub, tshem tawm ib qho tshuaj txhuam uas seem, txhim kho cov khoom siv tshiab, thiab tom qab ntawd rov siv cov khoom tshiab. Koj puas tuaj yeem pom thaj chaw hlawv ib ncig ntawm cov diode uas twb muaj lawm? Nov yog qhov kuv paub cov diode yog tus ua txhaum ntawm kuv lub zog teeb meem. Kuv tshem lawv tawm los ntawm kev siv cov hlau txuas thiab lub tshuab ntxhua khaub ncaws kom tshem cov khoom txaus uas kuv tuaj yeem tso cov khoom kuv xav tau los hloov. (Faj seeb: daim duab ntawm cov cuab yeej yog los ntawm qhov txuas ntawm no thiab tsis yog kuv - ib qho nyuaj heev kom thaij duab ntawm ntu no koj tus kheej!)

Kauj Ruam 3: Ntxiv rau Qhov Tshiab

Koj tus neeg muag khoom tshiab tsis tas yuav zoo nkauj, tab sis koj tsis xav kom nws tsis zoo li nws tau kov ib yam ntawm cov khoom sib dhos lossis cov khoom sib dhos uas lub hauv paus lub hauv paus txuas tsis tau kov.