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PHILIPS 29PT9457 CHASSIS LO7 1L CA

TV - SERVICE MANUAL
Type: (PDF)
Size
4.9 MB
Page
61
Category
TV
SERVICE MANUAL
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  • Also known:
    PHILIPS LO-7 CA 29PT9457 CHASSIS LO7 1L 29 PT 9457 LO
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Relevant TV forum topics:
Philips 55PFL6678S/12 TV halott
Sziasztok
Philips 55PFL6678S/12 teljesen halottnak tunt, aram ala helyezeskor semmi LED nem nyul ki, kezelogombokra nem reagal.
Veletlenul kiprobaltam a taviranyitojat, erre pislogott a piros led.
Meregetni kezdtem benne, sajnos eleg rossz korulmenyek kozott (egy agyra volt lefektetve a TV), rajottem, hogy a 12V stby feszultseg helyes.
Lellenoriztem a feszultsegeket, ami a hattervilagitast hajtja meg, es itt akadtam el, mert az L_CA es R_CA 82.5V helyett csak 53V
A tap tipusa FSP159-4FS01
Sajnos nem talaltam hozza kapcsolasi rajzot. Mas feszultsegeket egyelore nem ellenoriztem.
Van esetleg otletetek, hol kotorasszak? Kapcsolasi rajz is sokat segitene.

Elore is koszonom
Minden jot,
Janos
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 37PFL9604H/12 elindul majd kikapcsol
Üdv Tanyalakók...
Adott a cimben emlitett Philips (Q549.2E LA). Olyat csinál, hogy bedugod áramba, elindul, philips bejelentkező kép, majd elmegy sby-ra. Utána inditod megy szó nélkül. Ez csak első inditásnál hosszabb áramtalanitás után játsza.
Vélemény?
Nem táp azom volt másik kicseréltem...
PHILIPS 42PFL7662D/ 05
Tudna e valaki a fent említett csodához emberi áron invertert (2300KTS001E (LY)-F) ? A kijelző típusa: LC420WU5. BÍzom benne, hogy csak ez a rossz és a párja nem, merthogy ketten vannak. Ezen a BD9897FS ki volt nyílva. Lesz ami lesz, szereztem, ami mérhető mértem, majd jött a próba. Hát lett még egy rossz ic-m. Ez nem robbant, csak szép csendben lett zárlatos. Amúgy lehet ilyesmit Magyarországon a SINI-n kívül kapni? Nekik van, aranyáron. Tippeket előre is köszönöm.
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