 Posted: Mon Dec 22, 2008 11:41 am Post subject: |
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| I have ordered two FET 2SK2698 and should be here tommorow and will put them in and see how i go. Yeah the board is $880 new but i have scorced a second hand one for $129 if i need it. | |
| Posted: Mon Dec 22, 2008 6:23 am Post subject: |
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| Not sure of the above , guess you can try emailing the guy & see what happens as he is replying in dutch to the original poster some time ago.
I don't think there was ever a diagram available for the power supply as it was not in the manual & purposely not meant to be repaired. While the FET's may be the only failures, it may be other things involved & probably not something worth getting into in the long run. btw the part number for the board is QAL0206-001 which is not cheap. While trying to replace the FET's may just fix it, you just never know? There may be things such as upgrades & /or modifications done to the original circuit that will never be published. |
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| Posted: Sun Dec 21, 2008 7:06 pm Post subject: |
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| sorry for digging this up but how did you go with fixing this as mine has the same problem. Did you get the diagram and did you find a replacement for the ic? did this fix it.
Cheers Rob |
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| Posted: Thu May 29, 2008 2:06 pm Post subject: Re: JVC Plasma GD-V4210 Pre-Regulator |
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Ik heb een voledige voeding interese email [email protected] gr jos |
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| Posted: Thu Mar 27, 2008 4:17 pm Post subject: JVC Plasma GD-V4210 Pre-Regulator |
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| I have a JVC Plasma Display which has a defective Powersupply. It blows the 10 Amps fuse because the FET 2SK2698 has developped a full Drain-Source short. (Two FET operated in parallell)
I replaced the FET(s) by IRF460 after which the Plasma Display returned to operational life perfectly. After a few On/Off cyclings of the unit it again showed failed FET's at the location Q004 and Q005. I have been unable to diagnose the FET gate drive believed to be a 9 pin IC marked 507A001 R12. I am looking for a schematic diagram of the PSU, and/or a useful suggestion from this expert group what to replace as most likely cause of failure component(s) TIA Bram |
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