Re: No Standby voltage 26" Sabre LCT260BKA
I think im going to shelf this tv for awhile and see if my finacial situation changes, as Im not able to invest much into this tv. I was checking online about this tv and seems that every place i checked says this brand and model is pure junk. It was given to me and I was just going to try to fix it to use it as a pc monitor. I want to thank each of you for all your wonderful help and advice.
aris21067
Member
Last Activity: 08-27-2020, 06:13 PM
Joined: 12-25-2012
Location: elizabethtown, ky.
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Re: No Standby voltage 26" Sabre LCT260BKA
kk I used a strong magnifying glass to check all solder points for gaps and bridges, all good there. When I installed the caps, i made note of the orientation of the negative side stripe for the caps.
Anyone have any suggestions on a good place to get caps thats very easy on the wallet? The reason I ask is because atm im unemployed so money is very hard to come by, hence why buying caps from ebay and using pulled caps. Any advice is more than welcome.
Thank you guys again so much for the education and help youve given so...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
Thank you for the information and links. yes the caps in the first link are Cheng brand, I take it that they are garbage then and maybe my whole problem could be the new caps i got from ebay?...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
Ill test that now
ETA: the pin that seems effected by hooking up the ribbon cables and power on is the pin that had the steady 4v reading. It now fluctuates between 1v to 2v. Also the 4 pins on the top connector now shows 13-20 volts with the ribbons wires connected.Last edited by aris21067; 12-28-2012, 04:12 PM.Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
All the caps I used are 105C but there is a mixture of caps, some are also pulls.
Here are the Ebay links to the new caps I used:
[URL="http://www.ebay.com/itm/271114835322?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649"]http://www.ebay.com/itm/271114835322?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649[/URL]
[URL="http://www.ebay.com/itm/320878792258?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649"]http://www.ebay.com/itm/320878792258?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649[/URL]...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
I tested all the pins and the results are in the pic attached. All Pins were fluctuating except 1.
[ATTACH]54213[/ATTACH]...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
you mean the ribbon connectors on the right side of the board?...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
the only cap I havent replaced was the 50v/10uF located just to the left of the line in connector. So far Ive had the tester connected to the 9v battery for 10 mins. and it hasn't budged, so it seems like the tester is working fine.
let me know which cap you want me to replace and I will....Last edited by aris21067; 12-28-2012, 02:25 PM.Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
[ATTACH]54203[/ATTACH]
Yes I tested from the 2 leads on the board (in the red circled area). I also marked the +/- orientation of the cap.
ETA: ive connected the tester via gator clips to a new 9v battery to test for faults.Re: No Standby voltage 26" Sabre LCT260BKA
[ATTACH]54203[/ATTACH]
Yes I tested from the 2 leads on the board (in the red circled area). I also marked the +/- orientation of the cap.
ETA: ive connected the tester via gator clips...Last edited by aris21067; 12-28-2012, 02:05 PM.Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
the voltmeter shows the voltage at the end of the pig tail that plugs into the power supply board is stable in the range of 119-120 Vac. I left the tester leads connected to the pig tail for 1 minute to see if it would fluctuate.
I also set the meter to 1000VDC and retested the capacitor again, this time it shows 263-274 volts DC. (I know its blowing my mind as well.)Last edited by aris21067; 12-28-2012, 01:29 PM.Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
yes, its all over the board in that range. it changes voltage like every half second....Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
Here are some pics of the PS board.
[ATTACH]54180[/ATTACH]
[ATTACH]54181[/ATTACH]
[ATTACH]54182[/ATTACH]
[ATTACH]54183[/ATTACH]
[ATTACH]54184[/ATTACH]
ETA: FYI, I removed one side of both heat sink cages for easier access.Re: No Standby voltage 26" Sabre LCT260BKA
Here are some pics of the PS board.
[ATTACH]54180[/ATTACH]
[ATTACH]54181[/ATTACH]
[ATTACH]54182[/ATTACH]
[ATTACH]54183[/ATTACH]
...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
I will try to get a camera working so I can take pics of my board. but visually there are no blown caps....Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
youre correct, that tester dont test DC volts. Im sorry I have been testing the cap using AC (refer to the part where I said im a noob, lol). I will retest the cap using the DC setting and will test to verify the tester as well. thank you and again sorry about my noobishness.
ETA: Just tested the DT-830B multimeter and it does test DC and the battery appears to be good and testing a 1.5v battery showed a pretty acurate reading.
ETA2: retested the cap and its now showing a DC voltage range between...Last edited by aris21067; 12-28-2012, 09:21 AM.Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
the attachments posted by XtraTN above shows the exact same power supply board that Im having issues with. The caps I had to replace are the exact same caps circled in those attachments.
The volt meter I used is: GB Instruments model: GCM-221 and it is an auto-ranging meter and max voltage is 600V. I can attempt to use a different volt meter if you need me to.
The LCD tv I have is a Sabre model LCT260BKA it is a 26" hd tv
the power supply board is a Megmeet MLT666 rev. 2.5
The...Leave a comment:
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Re: No Standby voltage 26" Sabre LCT260BKA
my sabre lct260bka shows only a rapid red blinking light at the power button.
I have the same problem as the OP but instead on the large capacitor im showing only 70.1 - 72.7 volts, but it cycles extremely fast from 0-72v. I have replaced the same caps as the OP (the exact same ones he has circled in his pics) as well as replace the 3 startup caps as suggested. Still have a rapid red blinking light (no green, only red), Any suggestions? Thank youLast edited by aris21067; 12-28-2012, 04:09 AM.Leave a comment:
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