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JWIN model# jv-dtv4622. has audio but screen is not lit. no h.v. on inverter boards.what is the problem? WHERE can i find parts for this model?

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If the high voltage is missing then either some parts from that power line (most likely the electrolytic capacitors) are faulty or there's a short in the video final module. Further testing is needed for a definitive answer.
Unfortunately JWIN is a generic/no-name company - it doesn't actually producing the devices it sells under its badge, they are manufactured by a different company with components from different other manufacturers put together on the cheap. As such they aren't supported by practically anyone except themselves. The only way to get parts is either directly from them or find some second-hand parts on auction sites.

Posted on Jun 04, 2010

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LG LED model# 47LB5800-UG. Black screen, full screen flashes every few seconds. Audio OK. LEDs appear to be lit when screen flashes. Sounds like LED driver or inverted board and/or connecting cable?


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Vizio e2600mv not back lit audio & controls work can see picture holding light up to what part?


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Have black screen, audio ok and flashlight test shows video. There are two led inverter boards. does that mean the power supply board is bad?


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Im wondering why the screen goes black from 5-30 seconds anywhere from 5-20 times an hour. I still have audio.


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.

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Contact the authorized service center to JVC, to buy a genuine one. Gopakumar Gopalan Google

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Tv wont power on


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The Stand By led is red, after become green for 5 seconds and after red again. The power board do not have 24V and 12 V. The 5 VCC is present.


All the caps look good (bad cap can look normal but can have high ESR)?
Are you getting PS_ON from the main board to turn on the 12/24vdc power supply section?
It may have sensed shorted or over current draw so it tsays it shutdown mode. Try disconnecting the power cables to the inverter board to see if the 12/24v will come back.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

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Hey my tv screen work for a little a while and then turn off


I just fixed one JV-TV2040 monitor that worked intermittently. Turns out the AC power adapter was bad. The wire was cracked inside the strain relief where it goes into the adapter. You can either replace the adapter with a suitable replacement or do like I did and carefully hacksaw the case open, chop out about 4 inches of bad cable, and resolder to the circuit board. I glued the repaired unit back together with silicone glue.

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Manuales de jwin jv-dtv15


I am sure there is one to download. If google is no help, just ask some deep web specialists, e.g. http://manualfox.com - this is a manual search agency and if they don´t find it, it does not exist in the Internet.

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It has not the C405 capacitor


if your are a technician , you will be able to do that.
remove the back, carefully remove the main board, plug the tv. with the multimeter on DC voltage, check the voltage at that point . If you find a 10V , the capacitor will be 16V, if 12V the capacitor will be 25V. in general the capacitor have to be electrolytic and have more than 470microfard.

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