Service manuals, schematics, eproms for electrical technicians
28GR678
Type: 
(58)
(58)Size
256.0byte
256.0byte
Page
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Category
TV
EPROM
TV
EPROM
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Looking for similar 28 manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar 28 manual?
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- Also known:
28GR-678 28GR678 28 GR 678
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Warning!
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Relevant TV forum topics:
Kezembe került egy Sencor SLE 24F58M4 TV. Bekapcsolás után megjelenik a SENCOR felirat, majd 10-15 másodperc múlva újra indul, és ez a folyamat megy örökké, míg ki nem húzom a dugaljból. A táp rendben, feszültségek megvannak. Gyanítom, hogy szoftver hiba lehet.
Van valakinek tippje mit lehet csinálni? A firmware-t megtaláltam, de nem tudom feltölteni, nem tudom, hogyan lehetne.
Köszönettel: M
Üdv.,Kollégák!
Egy dumpot szeretnék ehhez a készülékhez kérni.A sasszi: CUC 1838.
Köszi,Feri.
Üdvözlök mindenkit!
Sziasztok!
Adott a tárgybéli TV-monitor, melynek a táp IC-je (IC1)kalapot emelt, elszállt a Fet (Q1) és az R9 smd ellenállás.
Az IC-t FAN7554-nek gondoltam, de nem oké, mert itt a G vezérlés az R9-en keresztül a 4.lábra megy a nyákon.
A Fet STP6N60ZFP.
Mellékelek fotót a tápról és a kérdéses részről, hátha valaki küzdött már hasonlóval.
Előre is köszönöm a segítséget a kérdéses alkatrészek azonosításában, esetleg a táp rajzával együtt.
Üdv: -sándor-
JVC AV-21FMG4G Chassis SCW-1362A CRT TV blinks continuously after three failing power on attempts.
According to the customer, the upper portion of the screen started shrinking with horizontal lines, then ended with a single thin horizontal line.
This suspects the vertical drive section to be problematic. No vertical output though vertical in put is OK. After conducting an ESR check for capacitors in the vertical section, C428 (100uF 35V), connecting VCC1 with Pump-up pin # 3 of the IC, it measured 1200pF. It was replaced but still no vertical output. So changed the vertical IC401 (TDA78040), and the output appeared, but still blinks after three failing start-ups. I, m suspecting the corrupt EEPROM data.
CPU: TDA11010H / N1D00
EEPROM: 24C16A
Any one with EEPROM dump for this model or any help please?
According to the customer, the upper portion of the screen started shrinking with horizontal lines, then ended with a single thin horizontal line.
This suspects the vertical drive section to be problematic. No vertical output though vertical in put is OK. After conducting an ESR check for capacitors in the vertical section, C428 (100uF 35V), connecting VCC1 with Pump-up pin # 3 of the IC, it measured 1200pF. It was replaced but still no vertical output. So changed the vertical IC401 (TDA78040), and the output appeared, but still blinks after three failing start-ups. I, m suspecting the corrupt EEPROM data.
CPU: TDA11010H / N1D00
EEPROM: 24C16A
Any one with EEPROM dump for this model or any help please?