Amasannyalaze ga TV okulemererwa: okwezuula, okuddaabiriza n’okugonjoola ebizibu

Ekintu eky’enjawulo ku kulemererwa kw’amasannyalaze ga ttivvi kwe butakola ddala ekyuma kino oluvannyuma lw’okuyungibwa ku mutimbagano. Mu mbeera eno, si ddoboozi n’ekifaananyi byokka bye bijja obutabaawo, naye n’ekiraga emirimu. Okuddaabiriza amasannyalaze ga ttivvi, olina okusooka okuzuula ekizibu mu ngeri ey’amagezi.

Okwolesebwa kw’obutakola bulungi – engeri y’okuzuulamu okumenya kwa yuniti ya TV

Ka kibeere nti amasannyalaze galemeddwa ki, mazima ddala kijja kukosa enkola ya ttivvi. Obubonero buno wammanga bulaga okwonooneka kw’ekintu kino:

• TV teyaka
• ettaala eraga nti evuddeko;
• enfuufu ya pulse transformer ewulikika, ate nga TV tekola, anti ekyuma ekikuuma amasannyalaze bwe kikola (kino nakyo kiyinza okuba akabonero k’okulemererwa kw’ettaala ya LED emabega).

Ttivvi bw’ekoleezebwa mu ngeri eya bulijjo nga eraga okukyama okw’enjawulo mu ddoboozi oba ekifaananyi, okutaataaganyizibwa kuno kusinga kuva ku nsonga endala, so si kumenya masannyalaze. Mu kiseera kye kimu, waliwo ebimu ebijjako etteeka lino ng’ekizibu ekibaddewo kikwatagana mu ngeri emu n’amasannyalaze:

• ekiraga kiriko, naye ttivvi tetandika;
• bw’onyiga bbaatuuni y’amasannyalaze ku kyuma kyennyini, ttivvi tetandika;
• mu kusooka, eddoboozi lyokka lye lilabika, era oluvannyuma lw’akaseera – ekifaananyi;
• okulaga ekifaananyi okwa bulijjo n’okuzannya eddoboozi birabika oluvannyuma lw’okukoleeza n’okuggyako ttivvi enfunda eziwera;
• waliwo endabika y’emisono , eddoboozi ery’emabega, ekifaananyi ekimenyese.

Ebikulu ebivaako okulemererwa

Okulemererwa kw’amasannyalaze mu ttivvi za LED ez’omulembe kye kimu ku bizibu ebisinga okuvaamu. Ensonga nnyingi ziyinza okuleeta okwonooneka, naye abakugu bazudde ensonga 4 enkulu:

1. Enkyukakyuka za vvulovumenti mu mutimbagano (okufuna vvulovumenti efuluma ekendedde ennyo oba eyeyongedde). Olw’okubuuka vvulovumenti buli kiseera, si kukola kwa ttivvi yokka okwonooneka, naye n’ebitundu ebigikola nabyo bifuuka ebitali bikozesebwa. Okwewala obuzibu obuva ku vvulovumenti etali nnywevu, kirungi okukozesa ekyuma ekinyweza.
2. Short circuit . Kiyinza okuvaako ebitundu bingi n’ebitundu by’ekyuma ekyo okwokya omuli n’amasannyalaze.
3. Fiyuzi ya mains efuuwa . Ekiraga nti standby kijja kusooka kuloopa elementi eyokeddwa – tekijja kwaka.
4. Okwonooneka kwa capacitor . Ekizibu ekitera okubaawo naddala ng’okozesa ttivvi okumala ebbanga. Okwambala kwa capacitor kukwatibwako nnyo ensonga ez’ekiseera okusinga ez’ebweru. Okulemererwa kw’ekintu kino kuyinza okutegeerwa okukebera okulabika olw’okuzimba kwakyo okw’engeri (bulge).

Bino wammanga nabyo bivaako okubeerawo kw’obuzibu bw’amasannyalaze:

• obutagoberera biteeso by’emirimu;
• okumenya enfuga y’embeera y’obudde;
• okumenyaamenya ekyuma nga tolina bumanyirivu na kumanya kyuma.

Ttivvi eno tegumiikiriza nkyukakyuka za mangu mu bbugumu n’obunnyogovu. Olw’okuba ogiguze mu kiseera ky’obutiti n’ogireeta mu kisenge ekibuguma, tokoleeza kyuma kino mangu okwewala okufuumuuka munda n’okwonooneka amangu ebitundu ebikulu.

Okweddaabiriza ebyuma eby’ebbeeyi, olina okuba n’obukugu obw’ekikugu obusookerwako n’ebikozesebwa eby’enjawulo. Bino byonna bwe biba tebiriiwo, kirungi okutuukirira amangu omusomo.

Okuzuula amasannyalaze ga ttivvi nga tonnaddaabiriza

Okukola okuzuula okutuufu okw’okulemererwa kw’amasannyalaze, olina okukola ebikolwa ebiwerako mu mitendera.

Okumenyaamenya ttivvi

Okuzuula ekivaako obuzibu kutandika n’okumenyaamenya ekyuma. Kino okukikola, sikulaapu zisumululwa okuva emabega wa ttivvi okuggulawo okuyingira ku ludda lw’amasannyalaze. Mu bika bya ttivvi eby’enjawulo, amasannyalaze gabeera mu ngeri ez’enjawulo, n’olwekyo tekisoboka kulaba mangu elementi eno ng’omaze okuggyako ekibikka. Bw’oba ​​olina kkeesi ng’eyo yokka, olwo okutuuka ku masannyalaze kisinga kuggalwa n’ekibikka ekikuuma ekikoleddwa mu kyuma.

Mu bika bya ttivvi ebimu, obukuumi obw’enjawulo buyinza okuteekebwawo naddala ku masannyalaze. Mu nsonga eno, ojja kuba olina okuyita mu mitendera egiwerako egy’okusumulula sikulaapu ezitereeza ekitundu ky’oyagala.

Okumanyiira ekyuma ekigaba amasannyalaze

Okusobola okukola ebikolwa ebirala, kyetaagisa okutegeera obulungi engeri ebitundu by’amasannyalaze ga ttivvi gye bifaanana. Ebika byonna eby’omulembe tebirina masannyalaze gamu, wabula agawerako. Zisangibwa, ng’etteeka, mu kifo kimu – olubaawo. Board eno nnyangu okwawula ku ndala: ng’oggyeeko capacitors n’ebitundu ebirala, erimu transformers 3 enjeru ne kyenvu. Amasannyalaze ga ttivvi galimu ebitundu bino wammanga:

1. Amasannyalaze agayimiridde . Omulimu gwayo omukulu kwe kukuuma ttivvi mu mbeera ya ‘standby mode’ n’okulinda ebiragiro ebiddako. Mode eno eragibwa n’ekiraga LED eyaka. Okukola emirimu egya bulijjo, wateekwa okubaawo vvulovumenti ya 5V, ng’okugiwa ku ttivvi eweebwa ekintu ekiyitibwa duty element.
2. Bbulooka ya inverter . Omulimu omukulu kwe kuwa processor amaanyi. Singa omulimu guno gumenya, bw’ogezaako okukoleeza ttivvi, ojja kulaba enkyukakyuka ey’amangu okudda mu mbeera y’okwebaka. Kino kiva ku kuba nti processor, nga tefunye kukakasa kukola okuva mu inverter, eyimiriza okukola kw’ebikolwa ebirala n’edda mu mbeera y’okuyimirira.
3. PFC block . Omulimu omukulu ogw’ekitundu kino kwe kutereeza ensonga y’amaanyi, nga eno ekola era ekola. Ekisooka kyetaagisa TV okukola, mu kiseera kye kimu kiyinza okwongera ennyo ku nkozesa y’amasannyalaze n’okukosa okwambala amangu kwa capacitors, ekikosa obubi obulamu bw’amasannyalaze okutwaliza awamu. Amaanyi agakola gakola ekikolwa eky’omugaso, era amaanyi agakola gakyusa gokka ku mutwalo okuva ku jenereta ne gadda ku jenereta.

Ekikulu ku by’amasannyalaze: https://youtu.be/vH8Nv1pZu8k Ekyuma ky’amasannyalaze ga TV n’ebitundu byayo ebikulu byogerwako mu katambi kano: https://www.youtube.com/watch?v=p3YTt9Cb3Kk

Okugonjoola ebizibu

Bw’omala okwemanyiiza ebitundu ebikola ekyuma ekyo, genda mu maaso n’okukizuula. Nga okozesa tester, ring output ya standby power supply – ekivaamu kirina okuba 5V. Singa vvulovumenti eba ntono okusinga ekiraga kino oba nga tewali ddala, obuzibu businga kuba bwa capacitors eziremye. Okuzuula kino, okwekebejja okwangu okw’ebitundu bino kimala – bijja kuba bikonvu. Ebitundu ebisinga okubeera mu bulabe mu masannyalaze ga TV mulimu filter capacitors, ezifiirwa eby’obugagga byabwe eby’erinnya amangu okusinga ebirala. Mu mbeera eno, ekintu ekyonoonese tekitera kuba na kwonooneka okulabika. Okusengejja obubi kivaako amasannyalaze obutakola, inverter okulemererwa, software okulemererwa mu microcircuits ku board. Singa capacitors ziba OK, kebera fiyuzi. Ku lw’ekigendererwa kino, kukozesebwa okukuba eddoboozi, okujja okuzuula nti waliwo oba obutabaawo kwa short circuit. Era olina okugezesa olubaawo okuva ku ludda olw’emabega, nga kino olina okusooka okuggya elementi ku fuleemu. Kebera oba bino wammanga ebikyamye ku resistors:

• okuzikiza;
• enjatika;
• soldering embi ey’ebifundikwa;
• ebituli wakati w’emitendera.

Bino byonna bisobola okugezesebwa n’amaaso, n’oluvannyuma n’osalawo engeri y’okugonjoolamu ekizibu ekyo. Singa okwekebejja tekulaga kintu kyonna, kebera resistors n’ekipima. Okulemererwa kujja kulagibwa nga zero resistance.

Ebiragiro ebikwata ku kuddaabiriza amasannyalaze ga ttivvi mu mutendera ku mutendera

Amasannyalaze ga ttivvi ez’omulembe, ng’etteeka, galina circuit eya bulijjo. Enjawulo eziriwo zikka ku bunene bw’ebitundu by’ebyuma n’amaanyi agafuluma yokka. Mu nsonga eno, okuzuula n’okuddaabiriza bibaawo okusinziira ku nkola y’emu. Circuit y’amasannyalaze eya bulijjo eya TV ey’ebweru:

Ebikozesebwa n’ebikozesebwa ebyetaagisa

Ku kuddaabiriza, olina okutereka ebikozesebwa n’ebikozesebwa, awatali ekyo tekijja kusoboka kumalawo buzibu mu mutindo:

• ekyuma ekisoda nga kirimu amaanyi agatereezebwa;
• solder, omwenge (petulooli alongooseddwa), flux;
• ekiggyamu solder;
• sikulaapu mu seti;
• ebisala waya (ebisala ku mabbali);
• ebisiba ebisiba;
• omugezesa (ekipima ebingi);
• ettaala ya watts 100.

Okutandika okuddaabiriza amasannyalaze ga ttivvi, olina okuba n’ekifaananyi ekiraga omutindo gw’emmotoka ku mukono (bwe waba tewali, osobola okugiwanula ku yintaneeti ku mukutu omutongole ogw’omukozi).

Ebiragiro ku mutendera ku mutendera ku kugonjoola ebizibu by’amasannyalaze

Bw’ogoberera ensengeka y’enteekateeka y’okugonjoola ebizibu, osobola okuzuula n’okuddaabiriza ebyonoonese ebikulu ku masannyalaze ga ttivvi:

1. Tukebera omuguwa gw’amasannyalaze, socket ne / oba extension cord oba teyonooneddwa.
2. Tumenyawo ttivvi ne tusumulula olubaawo lw’ebyuma.
3. Tukebera ebipande by’amasannyalaze, ne tuzuula oba waliwo capacitors ezizimba, cases ezikutuse, resistors ezikutte omuliro.
4. Tukebera soldering naddala soldering ya contacts za pulse transformer.
5. Bwe kiba nga tekisoboka kulaba mu maaso elementi eyonoonese, tugezesa mu mutendera gwa fiyuzi, dayode, transistors ez’amasannyalaze ne capacitors. Naye, kisoboka okuteekawo okumenya kwa microcircuits ezifuga mu ngeri etali butereevu yokka – nga tewali maanyi, era nga elementi zonna ezitali zimu ziri mu nsengeka nnungi. Mu nkola, kibaawo nti modulo y’amasannyalaze bw’eba tekola, fiyuzi esigala nga bweri. Embeera ng’eyo eyinza okulaga obuzibu ku ttansiita ya jenereta ya pulasi eya frequency enkulu.
6. Tukebera, awatali soldering okuva ku board, oba waliwo okumenya mu ballast resistance, short circuit ya high-voltage filter capacitor, okwokya (okumenya) kwa rectifier diodes.
7. Nga tumaze okuzuula ekintu ekyonoonese, tukikyusa.
8. Singa kizuulibwa nti ttivvi efumbiddwa ng’efunye obuzibu, osobola okugimalawo ng’otonnya ekirungo ekikyamu n’akawuka ka ppamba akannyikiddwa mu mwenge oba acetone. Singa tekimanyiddwa kitundu ki ekitongole ekivaako, obutakola bulungi buyinza okuva ku bbugumu ekintu ekimu oba ekirala n’ekyuma ekisoda.
9. Tuli mu kwetegereza okuddaabiriza. Ettaala tugiteeka mu kifo kya fiyuzi, tukoleeza ttivvi mu mutimbagano. Singa ettaala eyaka n’ezikira, ekiraga kiba kyaka, raster erabika ku ssirini, kye tusooka okukola kwe kupima vvulovumenti ya sikaani ey’okwebungulula. Bwe kiba waggulu nnyo, kebera era okyuse capacitors z’amasannyalaze. Enneeyisa y’emu yeeyolekera mu mbeera y’okulemererwa kwa babiri ba optocoupler.
10. Singa ekiraga kiba kisirise ng’ettaala eyaka n’ezikira, tewali raster, kino kiraga nti waliwo obuzibu mu kutandika jenereta ya pulse. Tukebera omutindo gwa vvulovumenti ku capacitor y’amasannyalaze eya ffilta y’ekitundu kya vvulovumenti eya waggulu. Bwe kiba nga tekisukka volts 279, tunoonya ekivaako mu diodes ezimenyese eza rectifier bridge oba capacitor leakage. Singa tewabaawo vvulovumenti n’akatono, tuddamu okukebera circuit z’amasannyalaze. Era olina okugezesa diodes zonna eza high voltage rectifier.
11. Ng’ettaala eyaka nnyo, ggyamu mangu ttivvi ku mutimbagano. Tuddamu okugezesa ebintu byonna eby’amasannyalaze.

Samsung UA32EH4003 Okuddaabiriza amasannyalaze ga ttivvi: https://youtu.be/uGYd3hE8Zfw Engeri y’okuzuulamu amasannyalaze ga ttivvi okulemererwa mutendera ku mutendera n’engeri y’okuddaabiriza ekyuma kino kyogerwako mu katambi kano ak’okutendekebwa: https://www.youtube.com/ watch?v =daXMYuZ1CXg Okuddaabiriza amasannyalaze agakyusakyusa ku ttivvi: https://youtu.be/yru9PNAKAkE Okulemererwa kw’amasannyalaze kye kimu ku bisinga okuvaako ttivvi okugwa. Nga olungamizibwa ebiragiro ebikwata ku mutendera ku mutendera, osobola okukola okuddaabiriza ggwe kennyini. Mu butabeerawo nkola emala n’okumanya okw’enjigiriza, kirungi okutuukirira amangu ddala edduuka eriddaabiriza okwewala ebizibu eby’amaanyi ennyo.