TV yog ib yam khoom tseem ceeb hauv txhua tus hauv tsev. Zoo li lwm yam khoom siv nyuaj, nws tuaj yeem nres ua haujlwm rau qee yam laj thawj. Kev tawg tuaj yeem sib txawv, tab sis qhov tshwm sim feem ntau yog qhov xwm txheej thaum lub vijtsam TV dheev pib blinking zoo lossis tsuas yog tig tawm thaum saib. Tau kawg, qhov no tuaj yeem ua rau muaj kev txhawj xeeb loj rau tus tswv ntawm cov khoom siv, tab sis koj yuav tsum tsis txhob txhawj ntau dhau. Yuav pib nrog, nws yog ib qho tseem ceeb los tsim lub ntsiab yog vim li cas cov duab ploj hauv TV, tab sis lub suab ua haujlwm.
Zoo li cas?
Muaj ntau yam teeb meem rau duab thiab suab. Cov teeb meem tshwm sim uas ntau tus tswv TV ntse ntsib suav nrog qhov xwm txheej thaum cov duab ntawm LCD TV tau ploj mus, tab sis muaj suab. Tsis tas li ntawd, qhov teeb meem yuav raug nthuav tawm raws li hauv qab no:
- TV ua suab tab sis tsis muaj duab;
- hloov tsis tau channel zoo vim lub vijtsam dub;
- tsisbacklight ua haujlwm;
- txoj kev ua rau muaj qhov tsis sib haum xeeb ntawm daim duab, hloov nws qhov loj, ua rau xav tau hloov cov duab hom;
- qhov ci ntawm qhov screen deteriorates zoo heev, cov xim dhau los ua npub;
- Daim duab txiav tawm tsis tu ncua thiab TV screen kaw.
Ua ntej koj yuav kho koj lub cuab yeej, nws yog ib qho tseem ceeb kom txiav txim siab qhov ua rau lub cev tsis ua haujlwm thiab xav txog koj txoj haujlwm tom ntej.
Yuav muaj teeb meem dab tsi?
Vim li cas cov duab ploj hauv TV? Qhov laj thawj feem ntau yog vim li cas daim duab hauv TV pib ploj mus thiab lub suab ploj yog qhov kho vajtse tsis ua haujlwm. Teeb meem nrog kev ua haujlwm ntawm lub zog hluav taws xob lossis chav xim xim, qhov hluav taws kub hnyiab tawm, lub matrix tawg thiab lub capacitor - tag nrho cov no feem ntau ua rau cov teeb meem hauv qab no:
- stop showing all shows;
- duab xim hloov ntsuab lossis dub thiab dawb;
- duab hloov nws txoj haujlwm, tig, hloov hom;
- Lwm yam teeb meem kuj tuaj yeem tshwm sim thaum daim vis dis aus nws tus kheej ploj lawm, tab sis lub suab tseem ua haujlwm li qub.
TV poob daim duab - yuav ua li cas? Txhawm rau tshem tawm qhov teeb meem no, koj yuav tsum nrhiav kev pab los ntawm tus tswv ntiav ua haujlwm hauv lub chaw kho, lossis nws tus kheej tshawb nrhiav qhov teeb meem thiab nws txoj kev daws teeb meem.
Cable nyob rau hauv kev sim
Yog suab los ntawmntaus ntawv tawm los ntawm ib txwm ntim ntawm lub suab khiav, tab sis lub TV screen tseem tsaus, ces qhov kev daws teeb meem tseem ceeb yuav yog sim cov cable uas xa cov duab:
- antenna;
- HDMI 3;
- los ntawm tus muab xov tooj;
- Tshuaj xyuas kev sib txuas hauv Is Taws Nem (qhov no yuav tsum tau ua thaum lub TV tau nruab nrog lub thawv ntim khoom digital).
Yuav ua tiav daim tshev zoo li no, koj yuav tau siv cov khoom siv tshwj xeeb Moinfo. Nws tau tsim tshwj xeeb los txheeb xyuas cov teeb meem tseem ceeb nrog kev ua haujlwm ntawm lub cuab yeej thaum xa cov teeb liab video thiab suab. Yog tias daim ntawv thov tuaj yeem txiav txim siab qhov ua haujlwm tsis zoo ntawm lub cuab yeej, tus tswv yuav tsum ua tib zoo tshuaj xyuas cov kab sib txuas rau txhua yam kev puas tsuaj.
Teeb meem nrog kev ua haujlwm matrix
Tej zaum qhov laj thawj feem ntau yog vim li cas cov duab ploj ntawm lub TV lossis qhov kev hloov pauv tau tshwm sim yog suav tias yog matrix tawg. Yog tias lub matrix puas lawm, cov tsos mob hauv qab no yuav raug pom:
- dhia duab;
- npo pib pom tsuas yog ib nrab ntawm cov duab tom qab;
- paj ntawm cov xim sib txawv lossis ib qho (xim liab, dawb, daj) pib mus thoob plaws lub vijtsam.
Feem ntau, cov matrix tawg nyob rau hauv kev cuam tshuam ntawm lwm yam, piv txwv li, nyob rau hauv cov ntaub ntawv ntawm kev huam yuaj dej ingress, ntog, los yog muaj zog lub zog. Hauv qhov no, nws yuav tsis tuaj yeem kho lub vijtsam, koj yuav tau yuav lub matrix tshiab (lossis txawm yuav lub TV tshiab).
Yog tias muaj teeb meem nrog cov ntsiab lus no tshwm sim tsis muaj laj thawj tshwj xeeb, piv txwv li, daim duab nws tus kheej dheev pib ua huab lossis ob npaug, ces tus mob no tuaj yeem kho tau hauv kev pabcuam. Ntawm no, qhov qub module tau hloov nrog ib qho tshiab, ua haujlwm zoo.
Tsis tas li, TV matrix tuaj yeem hloov pauv ntawm nws tus kheej hauv tsev, tab sis nws yuav nyuaj heev rau cov tsis muaj kev tshaj lij hauv cheeb tsam no los hloov nws nrog lawv tus kheej tes. Thawj qhov teeb meem yuav tshwm sim nyob rau hauv tus txheej txheem ntawm kev npaj rau kev kho: nws tsis yog yooj yim mus nrhiav tau txoj cai matrix qauv rau ib tug tshwj xeeb TV, nws yuav tsum tau txiav txim los ntawm lub official chaw pab cuam ntawm lub nroog. Txwv tsis pub, muaj kev pheej hmoo siab ntawm kev tau txais cov khoom cuav, uas tsuas yog cuam tshuam rau tus mob thiab kev ua haujlwm ntawm cov cuab yeej.
Hlawv capacitors hauv lub cuab yeej
Teeb meem nrog kev ua haujlwm ntawm cov capacitors hauv LCD TVs tshwm sim vim muaj lub zog muaj zog. Cov cim sab nraud ntawm kev puas tsuaj tuaj yeem ua raws li hauv qab no: daim duab hauv TV tam sim ntawd ploj mus thiab tshwm sim, lub vijtsam nws tus kheej tawm mus, lub teeb liab nres tam sim tom qab lub cuab yeej qhib lossis tom qab lub sijhawm luv luv, daim duab ob npaug lossis poob nws. brightness - darkening, dullness. Tom qab disassembled lub TV, koj tuaj yeem pom qhov o lossis cua tshuab rau ntawm lub rooj tsavxwm, nrog rau lub tshuab cua tshuab.
Nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo saib xyuas qhov tseeb tias tom qab rov ua dua, nws yog lub hwj chim uas tsis ua ntej. Kev ntsuas ntsuas yuav tsum tau ua raws nraim tib yam li hauv lwm qhov xwm txheej. Kev kho TV yuav tsum tau uatus kws tshaj lij uas yuav tiv thaiv qhov teeb meem ntawm qhov teeb meem thiab tsis ua kom tawg tag.
Matrix cable teeb meem
Cov cim tseem ceeb uas koj tuaj yeem nkag siab tias nws yog matrix cable uas tau tawg yog cov tsos mob hauv qab no:
- daim duab ploj mus ib ntus ntawm lub vijtsam TV;
- lub cuab yeej tsis qhia cov duab ib txwm - cuam tshuam tshwm sim, lub saib ripples muaj zog;
- koj tuaj yeem pom qhov txawv ntawm daim duab: ntau cov kab txaij tshwm sim ntawm qhov screen lossis ob npaug ntawm daim duab hauv geometric txiav txim.
Tom qab thov kev pab los ntawm tus tswv, nws tuaj yeem muab cov kev daws teeb meem hauv qab no:
- kho kab;
- muas part new.
thawj txoj kev yog suav tias yog siv sijhawm thiab siv tsis tau, vim nws yuav yooj yim dua los rhuav tshem qhov tawg thiab hloov mus rau qhov tshiab dua li sim kho nws. Koj yuav tsum tsis txhob sim ua haujlwm nrog koj tus kheej.
Illumination issues
Lwm yam uas tshwm sim ntawm qhov screen blanking yog qhov tsis zoo backlighting. Hauv cov khoom siv LV, cov LEDs hauv cov teeb pom kev zoo tsis ua haujlwm ib txwm. Nws yuav yooj yim heev los txheeb xyuas qhov teeb meem no - cov duab blinks muaj zog, cov yam ntxwv ripples tshwm rau ntawm nws, tab sis qhov teeb meem tseem ceeb yog kev ua haujlwm tsis zoo nyob rau hauv lub backlighting ntawm lub polymer kua siv lead ua txheej.
Tau qhov teeb meem zoo li no thiab kho lub teeb rov qab nrog kojkev siv zog hauv tsev yuav luag tsis tuaj yeem vim tsis muaj tag nrho cov ntsiab lus tsim nyog. Kev xaj lawv los ntawm tus neeg xa khoom raug cai yog lub sijhawm siv sijhawm thiab kim, thiab cov khoom seem no tsuas yog tsis muab rau hauv xov tooj cua lag luam. Vim li no, qhov kev daws teeb meem zoo tshaj plaws yog xa koj cov khoom tawg mus rau qhov chaw pabcuam uas muaj ntawv pov thawj nrog cov kws ua haujlwm paub txog.
Inverter hlawv tawm
Nws yog qhov yooj yim tsis tuaj yeem piav qhia txhua qhov laj thawj rau kev tawg ntawm qhov hluav taws xob inverter ntawm lub TV. Cov cim tseem ceeb ntawm kev tawg muaj xws li cov xwm txheej hauv qab no:
- duab flickers ntau, distortion tshwm;
- thaum koj qhib TV, daim duab ploj;
- video ib ntus tsis tshwm sim ntawm lub monitor ntev lossis tsis tuaj yeem ua tiav;
- TV zaub yuav dim tom qab qhib thiab tawm tom qab lub sijhawm luv luv;
- lub suab tam sim no, tab sis muaj ripples lossis kab txaij ntawm qhov screen;
- Daim duab tshaj tawm yog qhov muag plooj, tsaus nti, uas ua rau nws tsis tuaj yeem txiav txim siab tias muaj dab tsi tshwm sim ntawm qhov screen.
Lub inverter tsis yog tsuas yog lub luag haujlwm rau kev xa hluav taws xob mus rau lub backlights, tab sis kuj:
- hloov 12 volt DC rau high voltage AC;
- restores lub teeb tso zis tam sim no rau qib tau txais;
- restores qhov ci ntawm daim duab thaum koj xav tau nce lossis txo nws;
- muab cov theem tso zis ntawm lub inverter thiab cov input impedance ntawm lub teeb;
- tiv thaiv cov hluav taws xob hluav taws xob los ntawm kev luv luv ntau dhaureboot.
Ntawm lawv tus kheej, tsuas yog cov neeg uas paub siv cov hlau nplaum thiab cov khoom siv kom zoo, thiab tseem muaj tsawg kawg hauv tsev kawm ntawv kev paub hauv hluav taws xob thiab physics tuaj yeem kho lub inverter tawg ntawm lawv tus kheej. Nws yog ib qho nyuaj los teb cov lus nug ntawm qhov twg qhov chaw hlawv tawm ntau zaus, vim qhov teeb meem tuaj yeem tshwm sim nyob txhua qhov chaw: board controllers, teeb, thiab transformers.
Kev siv hluav taws xob
Yog tias lub suab ntawm TV tseem nyob, tab sis tsis muaj duab, tab sis lub monitor tas li blinks, nws cov xim tsaus, thiab cov duab tsis tso tawm kom raug lossis tshwm sim lig, feem ntau qhov teeb meem yog lus dag. nyob rau hauv lub hwj chim mov.
Kev sim kho cov khoom siv hluav taws xob hauv tsev yam tsis muaj kev paub txaus hauv hluav taws xob thiab physics raug txwv, vim qhov no tsuas yog ua rau qhov xwm txheej tsis zoo thiab ua rau muaj kev phom sij txaus ntshai. Nws yog qhov zoo tshaj rau kev tso siab rau qhov teeb meem no rau tus kws tshaj lij uas yuav txiav txim siab sai sai thiab kho nws.
