Kho DVRs muaj ob txhais tes: daim duab, cov lus qhia, cov tswv yim, thiab kev txheeb xyuas

Niaj hnub nimno DVRs yog nruab nrog zoo ruaj ntseg tshuab. Txawm li cas los, lawv tej zaum tsis muaj nyob rau hauv kev txiav txim kom tsis txhob muaj ntau yam failures. Nyob rau ntaus ntawv qauv yog heev uas zoo sib xws. Standard tswvyim DVR muaj xws li ib tug processor, connector thiab cov ntawv luam Circuit Court board.

Lub koob yees duab yog txuas mus rau nws los ntawm ib tug tshwj xeeb lub tsheb ciav hlau. Lub teeb liab yog kis tau ntawm photoresistor. Tsis tas li ntawd DVRs ntsia capacitors ntawm ntau hom. Ib co ua qauv siv ib tug module nrog ib tug nco unit.

Overheating cov piv txwv DVR Gmini HD90

Thaum overheated nyob rau hauv lub hnub kho DVR Gmini HD90 nrog lawv ob txhais tes yuav tsum tau pib nrog ib ncig ntawm lub Circuit Court board. Qhov teeb meem feem ntau yog lus dag nyob rau hauv photoresistors. Thaum kub fuses yuav tsis tiv thaiv lawv. Mus saib lub DVR, koj yuav tsum tshem tawm cov cover qauv. Tom ntej no, koj yuav tsum tshem tawm cov koob yees duab thiab ua tib zoo qhib cov ntawv luam Circuit Court board. Yog hais tias lub terminals yog tsaus, thiab ces yuav tau hloov kiag li. Npav muaj cov ntsiab lus nyob rau hauv lub rov qab sab.

Suab teeb meem nyob rau hauv DVR: cov lus qhia rau troubleshooting thiab tawm tswv yim tub txawg

Suab teeb meem tshwm sim feem ntau heev. Kho tsheb DVR nrog lawv ob txhais tes nyob rau hauv no qhov teeb meem no yuav tsum tau pib nrog ib tug module xeem. Tej zaum cov teeb meem lus dag nyob rau hauv lub puab, tab sis qhov no tsis tshua muaj tshwm sim. Mus saib cov koob yees duab module, tshem tawm cov hau ntawm lub DVR.

Ntxiv nws yog tsim nyog los disconnect cov kev ruaj ntseg cov koob yees duab voj. Koj yuav tsum tau qhib cov ntawv luam Circuit Court board. Lub modulator nyob rau hauv cov ntaub ntawv no yuav tsum tau nyob ze ntawm lub connector. Koj kuj yuav tau mus xyuas cov neeg. Yog hais tias koj ntseeg hais tias cov kws txawj 'lub tswv yim, nws yog tau mus sim ua rau hauv Circuit Court kuj ntsuam. Txawm li cas los, qhov no yuav tsum tau kom tus tester. Nyob rau nruab nrab, lub module kuj yuav tsum tsis txhob ntau tshaj 55 ohms.

Teeb meem nrog tus operating system nyob rau cov piv txwv ntawm Viaccess 605 neeg xyuas

Yog hais tias koj ntseeg hais tias lub txheeb xyuas ntawm cov neeg, lawv yog feem ntau ntsib teeb meem vim lub operating system. Feem ntau, qhov no tshwm sim thaum lub puas yoojyim modulator. Nyob rau hauv cov ntaub ntawv no nws tseem tau los kho lawv tus kheej txhais tes. Viaccess DVR 605 nws yuav tsum tau mus xyuas. Rau lub hom phiaj no, lub hau yog tu thiab soj ntsuam los ntawm lwm tus neeg uas lub PCB.

Qhov no yog ua raws li ncaj qha tshawb xyuas modulator. Ua li no, ua tib zoo disconnect lub koob yees duab thiab cable. Cov kauj ruam tom ntej yog mus tshem tawm cov modulator nrog ib tug ntswj ntsia hlau. Feem ntau, cov teeb meem lus dag nyob rau hauv lub tshuab hu. Nyob rau hauv no qhov teeb meem, qhov khoom yuav tau hloov kiag li. Cov qauv no yog teem modulator hlau hom.

Kho lub connector los ntawm DVR

Connector nyob rau DVR yog lub luag hauj lwm rau kis lub teeb liab los ntawm lub modulator. Nws lov feem ntau los ntawm cov neeg kho tshuab kev txiav txim. Kho DVRs nrog lawv ob txhais tes nyob rau hauv cov ntaub ntawv no yog heev yooj yim mus ua. Tus thawj qauv uas muaj lub hau. Ntxiv mus, kom kho vaj tse rau lawv tus kheej txhais tes DVRs (tsis hais txog ntawm chaw tsim tshuaj paus) yog yuav tsum tau mus tshawb xyuas cov ntawv luam Circuit Court board, thiab ib tug modulator.

Yog hais tias lawv yog cov tag nrho nyob rau hauv kev txiav txim, koj muaj peev xwm tshem tawm cov connector. Tej zaum nws hu tej zaum yuav overheat. Nyob rau hauv cov ntaub ntawv no, kho lub DVR yog yuav luag tsis yooj yim sua. Yog hais tias cov neeg tsis puas ntsoog, koj yuav tau siv ncais thiab tshem tawm cov khoom no. Cov kauj ruam tom ntej yog mus xyuas lub valve rau nws. cov kuj nqi yuav tsum tsis txhob ntau tshaj 50 ohms. Yog hais tias lub tester qhia ib tug txawv los ntawm cov cai, ces, yuav tau solder lub tshiab connector.

Check connectors

Lub hwj huam qaum los ntawm tus DVR yog kev cob cog rua ntawm ib tug connector. Tej zaum cov kev twb kev txuas yog lawm thiab tus ntaus ntawv tsis ua hauj lwm. Kho DVRs nrog lawv ob txhais tes nyob rau hauv xws li ib tug cov ntaub ntawv, koj yuav tsum tau pib nrog xeem nyob. Rau qhov no nws yog tsim nyog los txhawb ib tug qauv. PCB nws yuav tsum tsis txhob cuam tshuam. Lub connector yog nyob rau hauv ib tug tsev nyob ze ntawm lub connector. Mus saib nws, tau tsiv mus nyob rau cov kev taw qhia ntawm cov nplua phaj. Tom qab ntawd, lub hauv paus socket yog tsim nyog los pry. Qhov no yuav ua tau siv ib tug ntswj ntsia hlau. Yog hais tias cov ntsiab lus yog pom txhua yam kev puas tsuaj, ces nws yuav tau raug hloov. Yuav connectors nyob rau hauv lub khw yuav tsis tau yooj yim. Txawm li cas los, ib tug yuav tsum paub lub caij nyoog kho.

Hloov cov Circuit Court board nyob rau hauv lub DVR

PCB DVR yog ib pawg ntawm cov ntsiab rau system tswj. Thaum lawv tsis, tus ntaus ntawv tsis ua hauj lwm. Kho DVRs nrog lawv ob txhais tes nyob rau hauv cov ntaub ntawv no yuav ua tau los ntawm tshem lub hau. Yuav kom tshem tawm cov PCB, koj xav tau ib tug ntswj ntsia hlau. Rau ntawm no theem nws yog ib qho tseem ceeb tsis txhob puas amplifier, uas yog nyob deb ntawm nws. Tom qab disconnecting lub PCB xyuas tag nrho cov slots thiab ntxuav lawv.

Teeb meem nrog lub tsheb ciav hlau los ntawm DVR "Kark lub Q3"

Yog hais tias koj ntseeg hais tias lub txheeb xyuas ntawm cov neeg, ces qhov no DVR cov teeb meem nrog rau cov tsheb ciav hlau muaj ntau heev. Hais tias tivthaiv yog heev capricious thiab rhiab kom zoo kub. Code nws lov, cia li poob kev sib txuas lus nrog cov koob yees duab, tab sis lub cim xeeb ntaus ntawv ntawm lub PC yog tseem muaj. Kho DVR "Karki" nrog rau lawv ob txhais tes nyob rau hauv cov ntaub ntawv ntawm breakage voj yuav tsum pib nrog tshem lub hau. Yuav kom tau mus rau lub hais tias ib feem, yuav tsum tau tshem tawm cov ntawv luam Circuit Court board.

Tom qab ntawd, los disconnect lub koob yees duab ncaj qha. Zephyr ntawm no DVR yog txuas ntawm ib tug tshwj xeeb connector. Nyob rau hauv thiaj li yuav tau muab nws dawb, yuav tau siv ib tug riam. Nyob rau hauv cov ntaub ntawv no, nws yog ib qho tseem ceeb tsis ua puas tsuaj tus hlau uas mus los ntawm lub roj teeb. Cov kauj ruam tom ntej yog ua tib zoo tshem tawm cov voj. Yog hais tias muaj yog pom tej yam tshwm sim ntawm kev puas tsuaj, uas txhais tau tias nws xav tau kev pab yuav tsum tau hloov. Tom qab tau txhim kho ib tug tshiab kev tivthaiv, koj cia li yuav tau rov-khoov lub connector thiab txhim kho hauv daim nrees.

Hloov cov photoresist rau cov piv txwv ntawm DVR "Navigator"

Yog hais tias koj ntseeg hais tias lub txheeb xyuas ntawm cov neeg, cov overheating nyob rau hauv lub hnub nyob rau hauv lub photocell qauv feem ntau mus down (hauv qab no qhia tau hais tias cov xov daim duab ntawm lub DVR "Navigator"). Kho koj ob txhais tes nyob rau hauv xws li ib tug cov ntaub ntawv yuav tsum ua. Nyob rau hauv thawj qhov chaw yuav tsum tau tshem tawm cov cover thiab unscrew lub luam Circuit Court board. Photoresistor tus qauv yog nyob ze ntawm lub condenser. Yog xav tau rau nws, tsis txhob disconnect lub koob yees duab.

Cias tshem tawm cov cable thiab disconnect lub tsev. Koj yuav tau mus saib cov photoelectric cell. Nws zoo li ib tug compact hais lus. Mounted rau hais tias lub caij ntawm cov hlau uas ua rau yus mus rau lub connector. Yog hais tias qhov teeb meem yog nws, ces, yuav tau siv ib tug blowtorch. Burnout photoresist yuav tau mus yuav ib tug tshiab ib feem. Teem caij nrog ib tug soldering hlau yog tsis yooj yim.

Kho module rau cov piv txwv ntawm DVR "Karki Q2 yog"

Lub module rau lub DVR yuav tsum tau tswj lub koob yees duab. Thaum malfunction teeb liab yog txhab khoom mus rau lub cim xeeb chav tsev. Nyob rau hauv xws li ib tug teeb meem no nws yog tau los kho lawv tus kheej txhais tes. DVR "Karki Q2 yog" rau lub hom phiaj no yuav tsum raug kaw. Nyob tom ntej no mus rau lub module Circuit Court board. Tab sis mus cuag nws, ib tug yuav tsum thawj disconnect lub tsev.

Tom ntej no yuav muaj rau tshem tawm cov koob yees duab ntawm lub tsheb ciav hlau. Tsuas yog ces yuav peb pom lub module, uas yog nyob ib sab mus rau lub distributor. Lub hauv qab ob hu tivthaiv nyob. Nyob rau hauv tej rooj plaub, lawv hlawv vim luv luv circuits. Yuav kom daws tau qhov teeb meem no, lub module yuav tsum tau muab tshem tawm thiab re-soldered. Nyuaj rau tiv nrog xws li ib tug teeb meem. Nyob rau hauv cov ntaub ntawv no nws yog ib qho zoo hu rau cov kev pab cuam centre. Txawm li cas los, qhov ua rau tsis ua hauj lwm kuj muaj peev xwm sau cov plua tshauv. Nyob rau hauv thiaj li yuav daws tau qhov teeb meem no, koj cia li yuav tsum tau ntxuav rau cov neeg uas muaj ib tug paj rwb kua ntswg thiab re-sib sau ua ke rau hauv lub DVR.

Summing li

Uas hais tias, ib tug yuav tsum tsis txhob tsis saib tsis xyuas cov kev cai ntawm kev siv ntawm lub DVR. Yog hais tias tsim nyog, kev soj ntsuam ntawm cov qauv, koj yeej ib txwm tuav koj tus kheej. Txawm li cas los, ua ntej lub ntaus ntawv kho yuav tsum ntsuam xyuas raws li ntawm cov kev puas tsuaj thiab ua ib qho kev paub txiav txim siab. Tej zaum nws yog ib qho zoo kom muaj xws li DVR chaw muab kev pab thiab sab laj nrog ib tug tshwj xeeb.