someone said follow the power in on main board to see if it gets to main chip. Not sure how to go about that. Also seen someone comment that vizio has problems with voltage converters or regulators. Assuming the 16 to 5 volts needed for ps-on. Willing to learn have tools and access to more. Looking for some direction from more experienced persons. Thank you, great site and, people!...
p-top
Member
Last Activity: 02-02-2024, 11:22 PM
Joined: 01-19-2015
Location: winona, mn
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You can see impression of components in this two sided tape. Not sure if that would cause a heat issue for them.
someone said follow the power in on main board to see if it gets to main chip. Not sure how to go about that. Also seen someone comment that vizio has problems with voltage converters or regulators. Assuming the 16 to 5 volts needed for ps-on. Willing to learn have tools and access to more. Looking for some direction from more experienced persons. Thank you, great site and, people!... -
Just annoyed by it posting before I was done and, it logging me out and loosing a bunch of time typing. I will update as I figure out how to use forum. sorry.Leave a comment:
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Vizio, E60u-D3, no standby light, no ps_on
Have vizio E60u-D3. No standby light. Have searched and read all D??u-D3 posts. posts with same symtoms fixed by new power supply, one guy needed back lights also.
main boards are kinda spendy and, out of stock alot of places. i would like to fix my board.
PS voltages
1 VSNS -2mV
2-5 LED-OUT -2mV
6-10 GND -2mV
11 +16VS 16.29V
12 AC-DET 3.929V
13PS-ON -3mV
14 +16VS 16.29V
15 +16VS 16.29V...Last edited by p-top; 11-27-2023, 11:40 AM. -
Re: samsung, ln55b650t1f, gamma ic? burnt!
update. bought a china rework station, pen flux, and solder paste. got five chips in from hong kong. practiced removing a few chips, clean up, and soldering them. soldering in wash a bit scetchy, but felt i was ready to just take out the samsung chip. turns out the ones that i got off easily were in fact easy ones. the samsung chip had a gob of solder under neath it. not knowing this. i over heated the pads before i got it to come off. pulling five pads. they say an education is expensive, so i still feel having the tool and flux and solder...Leave a comment:
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Re: samsung, ln55b650t1f, gamma ic? burnt!
think i found it. 178h68a. takes forever to get. and if i do get one soldered in is it just going to blow again. or do i need to check and replace other parts?Leave a comment:
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Re: samsung, ln55b650t1f, gamma ic? burnt!
got manual from electro. tons of info but still not finding it.
from the board appears to be C_U7. there is other C_U#'s on the board but none on the manual.
this is above my head but if i dont keep trying i wont learn....Leave a comment:
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samsung, ln55b650t1f, gamma ic? burnt!
55 inch
. biggest I've owned.
T-con board has FRC_TCON_CMO_80PIN
and a barcode sticker, M$35-D032351-L$UP390520052R
need help to identify ic so i can order some.
also any suggestions on flux pens, solder paste, and a hot air station will be welcomed. i will be practicing on junk boards first but wanna order the parts with the caps i need for others.
thank you all!... -
Re: Help Samsung PN43D490A1D
regretted posting. i should be asking advice not trying to give it. thank you for correcting me capkid.Leave a comment:
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Re: Help Samsung PN43D490A1D
the connector in pic 2 is not fully seated. . .two of the caps on pic three look alittle puffy as with few in six. cant see the ones on the ps well. you should esr test or replace all of them.Leave a comment:
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Re: hakko fx-888d vs used fx-951
the circuit specialists black jack series looks alright too. being a mechanic i have had best luck with name brands but dont know electronics tools or how to edit yet. sorry about thatLeave a comment:
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hakko fx-888d vs used fx-951
time to buy a solder station have been looking for used they dont show up on cl or pawn shops around here. i did find a well used 951 on ebay for 150. looks like it was used by employees of some sort, so it probably has alot of hours on it but the tip selection is much wider into some chips. a new 888d from hakko usa is 108 and new but less features. im using tvs as a fun way to learn electronics which will help tons with working with new cars and some day electric cars.i dont really know what to look for, and i respect the opinions around here. also how do i tell a fake from a real unit? thank... -
Re: New Members - please post your introductions here
hi all
my name is perry, Im from south east mn. have always been fascinated by electronics. used to take them apart as a kid and never fix or put back together. got into cars as a teen, so have diploma in auto mechanics. learnt some electrical things there, now trying to learn for real. i have fixed two 37in magnavox's one really easy caps, second zeners with lots of reading on here. i bought a tectronics 2235 scope a couple weeks ago but dont know how to use it yet. with books, forums and videos i'll get there....Leave a comment:
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