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SONY BE4 SERVICE

TV - SERVICE MENU
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8
Category
TV
SERVICE MENU
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  • Also known:
    SONY BE-4 BE4 BE
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Relevant TV forum topics:
Sony KV-X25TD lekapcsol standby sem lessz, sorkimenöre gyanakszom chassis: AE1
szép estét mindenkinek Adott a fenti TV bekapcsolás után egy pillanatra a nagyfeszültség megjelenik és letilt mindent még a standbyt is meg kell várnom mire kimegy az áram a TV-böl hogy ujra tudjam tesztelni. ha a sorvégtranzisztor és sorkimenötrafó közé berakok egy izzót a tv bekapcsol van hang válthatóak a csatornák. Remélem tudtok segiteni. Tisztelettel: Roland
Sony KV-2182MR (GP1 talál) kép lélegzés
Sziasztok! Jó ideje nálam van, most megcsinálgatnám 7végén :) Cső halott volt, megoldottam, de! A kép bal szélén függőlegesen egy jó pár centis vastag fekete sáv van, ahol ugye képtartalom nincs, plusz csatornaváltáskor a fényerő pillanatra megemelkedik és lélegzik a kép. Fényerőt ha ráadok pláne lélegzik. jó a gondolat menetem, hogy a sugáráram ahogy növekszik, nem bírja a táp a terhelést, tehát lehet ki kéne hajigálni az elkókat a tápból? Köszi! Üdv: Pityesz
Sony KDL-37W5500 - Blinks 8 times (Audio Error)
Hello to everyone, i have a problem with this Sony LCD Sony KDL-37W5500 Chassis EX2L MAINBOARD: 1-878-942-22 PANEL: T370HW02 Audio Amp: TAS5602 Sound System: CXA3785R-T6 main CPU: EMMA3 (under heat sink should be MB91F313APMC-GE1) Power Supply: G4, 3H267W, PSC10270F When i try to turn it on it clicks relay, blinks 1x Green Led, then it shuts down and blinks 8x Red Led. Looking at service manual it should be an Audio Error. When i try to enter Self Diagnostic Menu it just wont light up the screen. I do the sequence "I+" "5" "V-" "Power" and it powers up regularly-fault 1xgreen 8x red, black screen. From power supply i get all the voltages, except that 15V is 17.4V constant, but at the moment of powering it overshoots at 24V briefly. Also i don't get D3.3V voltage. I have 12V on regulator BD9540EFV, but enable pins 3 and 12 are held too low on 1.6V, and it need at least 2.2V to enable output, so i dont have 3.3V, only 0,7V. DVDD 3.3v is logic supply, so i dont get how CPU gets logic levels from ICs for error when there is no Logic Supply... When i measure the power for audio amplifier TAS5602DCAR it should be 13V i suppose, but it gets 17.4V, from the CON1300 pins 4 and 5. It is ok for that IC, it works on voltages until 30V, but I worry if that does not affect some other processes. Fault signal from audio amp TAS5602DCAR is on PIN19 and it is 3.3V that is HIGH and it suggests Normal Operation. On sound system IC CXA3785R-T6 pin44 the VFAULT signal is LOW 0.7V, that is too normal operation. But on audio amp pin18 TAS5602DCAR RESET is held in LOW and it does not go to HIGH to get out of the reset mode. That pin is controlled by main CPU signal X_SP_Mute. On sound system IC CXA3785R-T6 pin43 X_Protect output is LOW 0.4V that means ERROR. In datasheet it says X_PROTECTOUT outputs “L” when input voltage (SPxP/N) become under 3.0V. That is on pins 61-62 and 63-64, and if I understand right it needs to have 3+ V DC to output High Normal signal? Isnt that a bit too high to have on speakers? I measure 0V DC there, and 25mV AC. Also i can not find anywhere schematics for PSU board PSC10270F(3H267W), i need it because i think that this 15V should be around 15V not 17,4V. I did find zener diode that i think acts as a stabilizator and it measures ok, but i would replace it if i knew the markings that can not be read. All google stuff is from my posts so google wont help :) What do you think can be the main problem and solution for this ? I exclude replacing whole board I have and Audio Amp IC coming soon to replace, but i think that wont help. p.s. If anyone wants i can upload all pdfs that i have, ex2l SM, datasheets for audio ICs, datasheet for 3,3V regulator ect...
Sencor SLE3210M4 led háttér alacsony feszültség
Üdv!

Fenti készülék bekapcsol, de a led háttér világítása nem megy. A két csík teszterrel egyenként mérve 55V-on szépen működik. A táp felől viszont csak 64V-ot kap (ennyi a max bejövő is, a FET és a source kör rendben) és mivel soba vannak kötve ez nagyon kevés. Ha a csíkokat egyenként kötöm be, működnek, nem tilt le a védelem.
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