Re: Sanyo CE32LD47-B flashing standby light
Picture is no good for us to help look for cold joints - perhaps tryagain in natural light tomorrow?.
Looks like a Voltage regulator which is odd for an IC number I wonder if that relates to something missing off the board or on the other side ( have made that mistake before and it could be a mosfet) - do you mean you cant read the part number?
Try and clean it with isopropyl alcohol and use a magnifier
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Re: Sanyo CE32LD47-B flashing standby light
Thanks for the replies.Pin 12 to ground is 8.9Kohms with inverter connected.I have found a short between pins 1 and 3 of IC831 with pin 3 disconneced but I cant identify the device.Attached FilesLeave a comment:
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Re: Sanyo CE32LD47-B flashing standby light
they do suffer BADLY with cold joints,ive repaired a few vestals now,everyone had cold joints,in fact in one of my other posts,there was one where i could pull the caps off without unsoldering them,well shocked !,and i found one with a galvanised roofing nail cut down,and used as a 3.15 antisurge fuse
!,the bridge was in meltdown ,totally blown to pieces only the legs visable lol,the makeshift fuse was ok though
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Re: Sanyo CE32LD47-B flashing standby light
I believe a lot of the boards suffer from poor soldering , cold joints so can you get a picture of the back of the board - the front one is really good- thanks.Leave a comment:
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Re: Sanyo CE32LD47-B flashing standby light
on pin 12 of pl802 what resistance reading do you get with respect to cold ground?Leave a comment:
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Re: Sanyo CE32LD47-B flashing standby light
Tom66 knows a lot about these vestel boards - hates them- so you will probably get him going.
Does the backlight flash on at all during startup? Is there any sound?
Is there any noises, hissing ,ticking, have you been trying it with a known source
dvd or pc.Leave a comment:
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Sanyo CE32LD47-B flashing standby light
Hi Guys
This set has the Vestel 17PW26-4 power supply.At switch on the 24volts and 3.3volt lines come up that supply the inverter but no enable voltage on pin 12 PL802. After a few seconds power supply powers down then restarts then powers down again then powers down for good with standby light constantly flashing.Unplugging the supply to the inverter produces the same symptom.Does anyone know if this board will work without a load on it.Is it shutting down because the back lights are not starting?Any help in diagnosis will be appreciated.
Thanks.
Dave.Attached Files -
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