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SONY KV14V5D CH BC4 0
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Üdvözlet Mindenkinek!
A készüléket "hang van, kép nincs" hibával kaptam. A készülék működött, a háttér világítás állt le. Három ledet kellett cserélni, összerakást követően a TV rendben működik, de a távirányítóra érzéketlen. Kézi vezérléssel a készülék oldalán lévő kapcsolókkal ki-be kapcsolható, a hangerőt lehet szabályozni, a jel forrást ki lehet választani, minden rendben működik. A készenlétet jelző led rendesen mutatja a készenléti állapotot piros, a bekapcsolt állapotot zöld fénnyel de a távra nem reagál. A távirányító rendesen működik.
Kérem a tapasztalt kollégák segítségét. Az alaplap: Y200A560A.
Üdv.
Laci
A készüléket "hang van, kép nincs" hibával kaptam. A készülék működött, a háttér világítás állt le. Három ledet kellett cserélni, összerakást követően a TV rendben működik, de a távirányítóra érzéketlen. Kézi vezérléssel a készülék oldalán lévő kapcsolókkal ki-be kapcsolható, a hangerőt lehet szabályozni, a jel forrást ki lehet választani, minden rendben működik. A készenlétet jelző led rendesen mutatja a készenléti állapotot piros, a bekapcsolt állapotot zöld fénnyel de a távra nem reagál. A távirányító rendesen működik.
Kérem a tapasztalt kollégák segítségét. Az alaplap: Y200A560A.
Üdv.
Laci
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.
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.
Sziasztok,
A címben szereplő TV bekapcsolás után mutatja a logót, majd újraindul és folyamatosan ezt csinálja.
Gondolom szoftverezni kellene, ehhez kérnék segítséget.
- Honnan lehet letölteni a hozzá való szoftvert?
- Elég egy pendrive-ra rárakni és onnan elindul, vagy direktbe kell programozni a chip-et?
Köszi!
A címben szereplő TV bekapcsolás után mutatja a logót, majd újraindul és folyamatosan ezt csinálja.
Gondolom szoftverezni kellene, ehhez kérnék segítséget.
- Honnan lehet letölteni a hozzá való szoftvert?
- Elég egy pendrive-ra rárakni és onnan elindul, vagy direktbe kell programozni a chip-et?
Köszi!
Tisztelt Kollégák!
A fenti készülék működés közben leállt, azóta csak csak stand-by led villog (4-et).Hozzám kerülve cseréltem a "szlovák" sorkimenőt (HR 8638-ra),a zárlatos Q8803;8804;8805;8806;8203-at valamint a szakadt R8895 és R8896-ot. Ezek után elindult, de a geometria tragikus: visszintes méret kb.50% nagymértékű párna torzítással és nem is állítható. Nem találok egyébb hibás alkatrészt. Ha valakinek van ötlete, kérem segítsen! Előre is köszönöm: K. Gyuri
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