Service manuals, schematics, eproms for electrical technicians

PHILIPS 20PF5121 58

TV - EPROM
Type: (RAR)
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Category
TV
EPROM
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Relevant TV forum topics:
Philips 14PT1501/12 TE3,1Chassis Nem kapcsol be.
Szevasztok
 Na most ugy mond akasztják a hóhert hozták ezt a tv t hogy álitsam át 6.5 es hangra ez sikerült is össze szedem mondom hajtom kicsit, lejjeb vettem a hangot aztán mikor már feljebb akartam vinni nem lehetett ,csatornát váltani sem lehetett, kikapcsoltam azóta bekapcsolni nem lehet csak stenbayba van ,kényszer inditással be tudom inditani  de csak hangya háboru van semmi memü, kontroller feszültségei jók, rezeg is, de semmi reakció ,se a távra, se a tasztra, semmi komunikációt sem látok az eeprom és a kontroller közt, mi adhatta be a kulcsot nemtudom esetleg egy uj eeprommal nem programozza e fel magát.Kontroller tipusa ST 92195
Philips 68ik1977 sasé 3D
A fenti tv hibája, hogy néha ferde csíkosan kapcsol be, de ha programot váltok pár alkalommal akkor beáll. De néha még így is duplázza egy kicsit a képet. Ha minden jó, akkor kis vízszintes sávok láthatóak a képen. Eddig a KF-ben minden elkot cseréltem, a DIGI panelon is, és a táp és a sorkimenő körül is mindet kicseréltem, és nem változott semmi, csak annyi hogy ritkábban ferdül a kép.
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 A10E AA "logicboard"onallosult!!
Udv nektek tanyasiak!Fentemlitett sasszival szerelt cucc ugy dontott hogy sajat kezebe veszi a sorsat.Kepen rajta a menu ha kell ha nem(foleg ha nem),magatol musort keres,liniaris funkciokat alitgatja kedve szerint.Ha tobbet hagynam kibontakozni lehet tobb trukkot mutatna be mint a jo oreg Rodolfo hajdanan.Eprom tartalom rakenyszeritve,feszultsegek atmerve de jobb beletasra nem tudtam birni.Gyanum a logicboardjara terelodott.Tipusa 3139 123 5244.4 WK030.1.Kuldok rola imazst is.Ha valakinek jobb otlete,vagy modulja lenne szivesem vennem. Tisztelettel:Feri
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