njgretz
Member
Last Activity: 04-04-2015, 09:10 PM
Joined: 02-21-2015
Location: Lith Illinois
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toshiba c850-b705 (pscbwv) always on power led......shut down system led is always on....when i put the charger charging led on then off power led... -
Re: Vizio VSA26LHDTV10T. Had power surge ....
Well I finally got a new transistor and fuse in the mail. Only fuses I could order were 6.3a 160v. Original fuse was 7.0a 160v. I plugged in the tv, front light came on right away same as before. I turned the power on, front light changed colors, same as before.
Still no picture, no backlight, no sound, nothing. Fuse is dead again. Power board is good, 24v at all connections. Something on the inverter board has to be spiking/blowing the fuse. Any ideas on where to look next? -
Re: Vizio VSA26LHDTV10T. Had power surge ....
Please read 1st response, I noticed something else but I don't want you to miss my last reply.
Please take a look at these pictures. All but 2 of the 'transformers' solder connections the 2 prongs are separated. As you can see 2 of them are now soldered into one connection. I noticed it because one of the transformers looks like it was turned 5deg.
Should I unsolder and re-solder with prongs separate right?...Leave a comment:
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Re: Vizio VSA26LHDTV10T. Had power surge ....
I didn't have the board powered at first (I was totally green).
I've read a ton of articles since and have a better handle now.
You were right the fuse is dead.Leave a comment:
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Re: Vizio VSA26LHDTV10T. Had power surge ....
Sorry cables were not connected, I pulled the board out to work on it.
384VDC on main filter cap.
Pictures are attached...Leave a comment:
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Re: Vizio VSA26LHDTV10T. Had power surge ....
Well I found the culprit on the back lite inverter board. Please see attached photos.
Just need some quick info. How would you guys (the pros) go about it?
I was just going to order a new transistor, try to clean up the crap burnt on the connection and hope it works. However I did test continuity with the transistor off the board and it was good.
Any thoughts or ideas? How would you clean the burnt stuff off?
Would you buy a new transistor?
Thanks for any input...Leave a comment:
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Re: Need Help Phillips 47pfl5704d/f7 Screen just died
Thanks for the confirmation Budm.
Have you ever tried using the heat/air gun on a rework station to re-heat(resolder) the connection to the LCD? I'm thinking about giving it a try. Can't hurt at this point I guess!Leave a comment:
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Need Help Phillips 47pfl5704d/f7 Screen just died
Please take a look at the pictures, have you ever seen this before?
Watching TV with my wife and boom, this happened.
No impact just watching TV.
As you can see after 2 minutes the whole thing brightens up.
I replaced the T-con board just to rule it out but didn't change anything.
It looks like all of the gate drivers are permanently connected to the screen.
Any ideas other than replacing the entire screen?... -
Re: Vizio VSA26LHDTV10T. Had power surge ....
There are two 8 pin.
The one on the backside of the board by the cables (opposite the power cord input) says:
5430
TI 95H
ZKW9G4
The 2nd one, (VERY HARD TO READ)
SG6961SZ
B1AM5063925Y
7 pin says
P1337
PFC Diode
STTH5L06FP
GK03B VU
CHN 918Leave a comment:
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Re: Vizio VSA26LHDTV10T. Had power surge ....
Here are some more pics of the bottom of the board. Let me know if they are not good enough....Leave a comment:
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Re: Vizio VSA26LHDTV10T. Had power surge ....
I am new to this and am not sure how. Could you please elaborate? I can't find a schematic for my board so I don't know what voltages to look for. Hell I don't know where to put the ground test probe if I were to test it now that I think about it.Leave a comment:
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Re: Vizio VSA26LHDTV10T. Had power surge ....
My apologies, won't happen again.
Meter reads 170volts with probe on each leg of biggest capacitor.
May I ask how you knew to look for 360v>?
Is this a consistent number I could look for in the future on other TV's?
I couldn't find a schematic for this TV.
Thanks muchLeave a comment:
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Re: Vizio VA26LHDTV10T. Had power surge ....
Yes, you are correct I typo'd.
Thank you for catching that.
I put the ground on the heatsink and red probe on each of the big (laying down) caps legs. 62.8v on each leg.
I misspoke in my initial message. On the pinsets there are two 12v pins and six 24v. all read 24v pins measure 12.8v. and the two 12v pin are 0.
Thanks for any help!...Leave a comment:
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Vizio VSA26LHDTV10T. Had power surge ....
I'm looking for help on a Vizio VSA26LHDTV10T. Had power surge and now just the front light comes on nothing else. I did a quick test on the power board. On the printed board by the pins/ribbon cable on each side it says 24v on pins (each side). With the board plugged in, all 8 - 24v contacts measure 12.8v. I'm kinda new to this, any ideas on where or what to do next? Thank you for any help. None of the caps are visually bulging. The solder points on the underside of the board on the biggest cap look a little burnt. It's lifted off the 'glue'. The big transformer looks like it got heated up, like... -
I'm looking for help on a Vizio VSA26LHDTV10T. Had power surge and now just the front light comes on nothing else. I did a quick test on the power board. On the printed board by the pins on each side it says 24v on pins (each side). With the board plugged in all 8 - 24v contacts measure 12.8v. I'm kinda new to this, any ideas on where or what to do next? Thank you for any help. None of the caps are visually bulging. The solder points on the underside of the board on the biggest cap look a little burnt. Thanks much -
Re: New Members - please post your introductions here
Hey all, I'm just trying to get used to this awesome site. I believe I've come to the right place to learn about repairing electronics. I've always been an enthusiast. I have my BS in IS/IT and also studied EE along the way. I've recently branched out from fixing just computers to TV's and Xboxs. Would love any help you guys can offer as I have hit my first snag. Hope to be able to start a new thread soon so I can get some advice. Thanks!Leave a comment:
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Re: New Members - please post your introductions here
Hey Everyone,
Just wanted to say Hi and that I look forward to learning from you all.
I appreciate any help you all can offer.Leave a comment:
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