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PHILIPS CHASSIS 42PFL5332 52PFL5432 LC7.1A-LA

TV - SERVICE MANUAL
Type: (PDF)
Size
13.9 MB
Page
102
Category
TV
SERVICE MANUAL
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  • Also known:
    PHILIPS CHASSIS 42PFL5332 52PFL5432 LC7.1ALA 42 PFL 5332 52 5432 LC ALA LC7.1A LA LC7.1A-LA
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  • See related repair forum topics below. May be help you to repair.
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Relevant TV forum topics:
Philips 40PFL7007K/12 does not power on - Chassis QFU1.1E LA
Hi everybody, I have Philips 40PFL7007K/12 on repair. TV does not start up. I have checked the PSU and it seams to be OK. There seam to be problem on the main board. What I have tried… Well, there is +3V3-STANDBY coming from PSU to main board. This feeds up the main processor. This voltage has also been used to switch TV on. I have checked that switching signal from POWER ON button goes back to main board. But I did not check this whole path towards the processor as it is BGA package and it is covered by ceramic cooling plate. And here comes what is not clear to me. 1. How to check if the main processor works? Does it work on the +3V3-STANDBY when TV is is standby mode? 2. Can I somehow check if the PSU is working? May be by activating some pin? 3. I have noticed by measuring (ohm-meter) some capacitors on the main board (in circles on the picture) that there is very low resistance on them (4.5ohms). In the scheme it is shown that these capacitors are on the 1V5 (1.5V) line. Is this OK? Basically it does not give much current as I = 1V5 / 4R5 = 333mAmps. What do you think? Certainly there are low voltage data parts (RAM. Processor …) connected and such resistivity might be correct….?.... What I have also find that this 1V5 is split into 1V5M0 and 1V5M1. See the picture. I have removed the coils and measured resistance. Then 1V5M0 shows about 15ohms and 1V5M1 shows about 6,5ohms. The service manual is on this link: http://elektrotanya.com/philips_ch.qfu1.1e_la.pdf/download.html Thanks Martin
philips 42PF7520/10 táphiba hibakód nélkül
Üdv Mesterek!! A táp tipusa PDP PSU 2K5 ( 3104 32842741 ). A Vs-t kapcsoló fet zárlatos de simán átengedi a 70v-t (82,5 V helyett). A Va-t kapcsoló fet drain-jén van 70V , de a source-on már csak 12v van ( 63,8 V helyett).PFC fesz. 388V. Áram alá helyezve a táp indul de alacsonyabbak a feszültségek. A zus panelok nem működnek, de hibakód nincs, világít a zöld led. Köszönöm a segítséget .
Philips 6bMD2.1AA (egyik megjavult)
Sziasztok A fenti gép doksiját keresem. Nem találom, valószínű el bénázom a dolgot akárhogy ütöm azt írja nincs. A "barátunknál"pénzeset találtam. Köszi.
Philips 42PFL6067H/12 ki-be kapcsolgat magától.
Sziasztok! Holnap (az-az pénteken) megyek megnézni egy a címben említett TV-t. A hibajelenség amit mondtak róla (még nem láttam): Néha bekapcsol majd kikapcsol és ezt ismételgeti. Van mikor elég sokáig bírja, de előjön a hiba! (KIKAPCSOL magától) Amikor kikapcsol a STBY led világít. Én elsődlegesen a TÁPEGYSÉGRE tippelek a hallottakból. Ezért keresem a rajzát neki, hogy ha megyek akkor egyből tudjam hogy milyen alkatrészeket is kell vinnem. A kondikra gondoltam elsőként. Elméletileg ennek kell benne lennie: http://www.agelektrometal.com/dps-119cp-dps-119cp-a-2950298304-philips-42pfl6067-k12-power-board-besleme-karti-psu Vagy ha van valakinek tippje aki ismeri ezt a tápot, hogy mit érdemes kapásból cserélni rajta vagy mérni.... Azt az infót is szívesen fogadom. :) És még, hogy a táp kimeneti csatlakozóin pontosan milyen feszültség értékeket is kellene majd mérnem ha nincs feltüntetve a panelon. Az infókat előre is köszönöm.
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