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SONY KV-XR34M80.M81.N60 V2 BX1

TV - SERVICE MANUAL
Type: (PDF)
Size
12.8 MB
Page
176
Category
TV
SERVICE MANUAL
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  • Also known:
    SONY V2 BX1 KVXR 34 80 .M 81 .N 60 BX KV
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Relevant TV forum topics:
Sony BE3B chassis TV 11-es hiba üzenet
Sziasztok! Restellem,de nem tudom a 11-es hiba kód mit jelent.A kód tábla azt mondja:" M3L RXD Low Pover up only".Legyetek szívesek segíteni,mit jelent.Még azt is kérdezném,hogy ezek a kódok sasszi szerint változnak,mert van ahol a 8 voltos táp hibáját jelzi.Elöre is köszönöm a válaszotokat,üdvözlettel Reparator1
Sony KDL-32R410B ITC3 Chassis, 4-et villog a piros led! Hiba megvan!

Sziasztok!

Ma hoztam el ezt a tvét, hogy nem működik. Áram alá helyezve, bekapcsolás után zöldre vált a led, és pár másodperc után, 4-et villog a piros led. Lehúzott T-con kábelel, pedig megjön a háttér világítás pár másodpercre, és utána 5-öt villog. A manuálban B-board hibára utalnak, de ezen kívül semmi egyebet. Szerintetek ez lehet szoftver hiba, vagy main cserés lesz? Ha szoftver akkor honnan lehet letölteni, mert én nem találtam hozzá, vagy másik típusé is jó lenne hozzá? Segítségeteket előre is köszönöm!

-SOLVED- SONY KDL-32EX600 red led 2 flashing - negative 120V backlight missing PSU GE3D APS-272
Hello
I have on my table this sony kdl32ex600 with backlight issue. It's a common failure of this psu but i do not find any part faulted on this board.
The schematic it is almost the same, with minor differences with GE3B found at page 56 on this service manual:
https://elektrotanya.com/sony_kdl-32ex600_kdl-40ex600_kdl46ex600_chassis_az1-k.pdf/download.html
Uploaded only the page 56 from this sm to easing the search.
The red led it's flashing 2 times, meaning psu faulty. Indeed the led backlight does not light.
With the PSU outside of the tv, just with one resistance of 180ohm between standby ( pin 1 3,3V on connector CN6150 ) i get this values
on in:
starting with pin 1

1  +3,3V ST-BY
2  +3,3V AC_OFF_DET
3  +3,3V POWER_ON (with resistance 180ohm between pin1 and pin 3)
4  +12,56V AUDIO_12V
5  0V AUDIO_12V_GND
6  0V REG_12V_GND
7  0V REG_12V_GND
8  +12,6V REG_12V
9  +12,6V REG_12V
10  +0,1V BL_ERR
11  +3,3V BL_ON
12  0V DIMMER
13  0V DIMMER_DC
14  0V T-CON_Vcc_12V
15  0V T-CON_ON
All measure done at secondary ground point C6800 GND as reference.
Meanwhile, the led connected to CN6800 will remain with no light at all. The CN6800 will deliver positive 91V.
The negative branch will deliver at CN6801 ( both pin1 & 2 ) just -1V.
In the training manual found always in here at
https://elektrotanya.com/sony_kdl-32ex600_40ex600_46ex600_chassis_az1k_training%20manual.pdf/download.html
at page 56 will say "SHORT" at pin 12 DIMMER for testing the PSU, always with pin 3 POWER_ON connected to 3,3V ST-BY - pin1.
If i'll put a 180ohm resistance between GND and pin 12 DIMMER, then the tension on CN6800 will rise to +179V and the negative from the CN6801 will rise to -5V, the backlight led will light very very weak.
All tension from CN6805 will remain the same, except the BL_ERR will rise from +0,1V to +1,1V.
With only power_on pin 3 shorted by 180ohm resistance to the pin 1, i get this weak oscillation at emiter of Q6816 + Q6817

[URL=https://picturepush.com/public/16067400][IMG]https://www1.picturepush.com/photo/a/16067400/640/diverse/Q6816Q6817.jpg[/IMG][/URL]

With pin 12 DIMMER shorted ( always by a 180ohm resistance ) at GND, the oscillation will change from 250khz 1,6vpp to almost 70khz at 0,81Vpp. as below:

[URL=https://picturepush.com/public/16067401][IMG]https://www1.picturepush.com/photo/a/16067401/640/diverse/20181117-175255.jpg[/IMG][/URL]

Already checked the capacitors C6828 / C6830 together with D6805 / D6806.
Also checked the L6800 ( trafo ) and i've get 5,5mH instead of 5mH, i think it's ok.
All fuse checked, ok.
Q6814 and Q6801 tested under mosfet tester, ok.

[url=https://picturepush.com/public/16067402][img=https://www1.picturepush.com/photo/a/16067402/220/16067402.jpg][/url]

IC6800 & IC6801 gave +9V and respectively +2,49V

Already checked various components all over the board, i am out of ideas.

Any idea or help would be apreciated.
 
Sony FE2 táphiba
Sziasztok, van itt egy KV29FX30. 11-et villog a LED. Sortranzisztor nem zárlatos. Elolvastam a vonatkozó csatolmányt, az R618 ellenállást nem találom, pedig nagyítóval többször átnéztem a panel mindkét oldalát. Létezik olyan verzió ahol más pozíciószámmal szerepel az adott funkciót betöltző ellenállás? A másik: tartok tőle hogy az MCZ3001 rossz. Ügyfél elmondása szerint kb 2 hete kezdődött hogy nehezen indult a TV, most márt egyáltalán nem indul, akkor sem ha melegítem az IC-t. Látom hogy a Sininél kapható kétfajta is olyan 3000+ÁFA áron, a kérdésem hogy cserélt-e valaki mostanában ilyent? Sok rosszat hallottam erről az IC-ről. Esetleg ha volna valakinek egy tuti működő, át is venném. Üdv. Tamás.
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