Re: single led for led strip???
they are not the same part number are you saying they should work ?
pr0cess0r
Senior Member
Last Activity: 10-29-2022, 06:37 AM
Joined: 01-31-2011
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Hitachi 55HR332M12A2 single led for led strip???
i need to replace those les strip [url]https://www.shopjimmy.com/hitachi-55hr332m12a2-led-backlight-strips-4-55r82/[/url]
they are not in stock and other places sell used ones so i would like to find some replacement led.
my led tester say 2.6v but i assume it is off and those are 3v.
is there standard led used on those LG bran strip?https://i need to replace those les ...e to find some -
Re: Samsung UN55KU6290FXZC no picture but backlight work
ok so i was all wrong google showed me a completly different part when i did my seach so i was on the wrong led and now it is impossible to find this part datasheet
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Re: Samsung UN55KU6290FXZC no picture but backlight work
would it be a good idea to inject some power on the pin and see whta heat??
whe you say short on the matrix you talk on the flexible pcb?Leave a comment:
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Re: Samsung UN55KU6290FXZC no picture but backlight work
ok so i tested from pin 18 vgh and it is shorted to gnd... i looked aroung and there is an inductor L406 that is shorted to gnd on all 4 pin so i guess this is not normal?
DRP pin 14 is also shorted to gnd
this is with board out of tv
my model number is CJ05Leave a comment:
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Re: Samsung UN55KU6290FXZC no picture but backlight work
yes did not know to what point they messed with out but whne i saw the eatsink was not properly installed i know something was wrong and looked at it....Leave a comment:
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Re: Samsung UN55KU6290FXZC no picture but backlight work
yes im sure they are on if i disconnect lvds cables the screen is all kind of blue and light on!...Leave a comment:
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Re: Samsung UN55KU6290FXZC no picture but backlight work
so the person i got it from told be the mainboard needed to be replaced. is it common for this particular ic to fail on those tv?? should i look for a new board or it worth it to try to replace the ic?Leave a comment:
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Re: Samsung UN55KU6290FXZC no picture but backlight work
Ok so here are the voltages and also of a picture i removed the heatsink and found a component that too me look like it is removed... hard to find picture of board without heatsink...
This is on im not able to turn it off... when i plug it without main board back light is brigther and then get lower.... with main board try to turn it off and play with menu i cant sse and it come bighth and then lower..
CNL802
1=267v
9=222v
other are NC or negative
CNM803...Leave a comment:
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Samsung UN55KU6290FXZC no picture but backlight work
Il l i have this new project, when I connect the power it turn on and I see the backlight turning on but screen stay black. I did test the led with a led tester and they look same brightness with the tester they are not super bright.
Where should. I start??
Samsung UN55KU6290FXZC -
Re: Rair HP Z420 power supply
yes this coputer whas on 24/7 used like a server in a not very well ventilated closet! From your sugestion i will replace all small caps in this psu when i nhave some time!
Now i build my free PLEX server!Leave a comment:
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Re: Rair HP Z420 power supply
i replaced the samll taicon cpa on the primary side and it fixed it. I need to order cap to do a full recap because i replaced the taicon with a OST and dont know how lo g it will last.Leave a comment:
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Re: Rair HP Z420 power supply
can it be the small cap near the supervisor IC??Leave a comment:
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Re: Rair HP Z420 power supply
here are somes picture. i see a cheap capacitor near the lm339an maube its just this one?
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[ATTACH]164367[/ATTACH]Re: Rair HP Z420 power supply
here are somes picture. i see a cheap capacitor near the lm339an maube its just this one?
[ATTACH]164364[/ATTACH]
[ATTACH]164365[/ATTACH]
[ATTACH]164366[/ATTACH]
[ATTACH]164367[/ATTACH]Re: Rair HP Z420 power...Leave a comment:
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Repair HP Z420 power supply
Hello, my Z420 enter a loop when i try to turn it spin the fans then click and start over in a loop.
I heated the power supply with a air dryer and it started and working perfectly.
I think that maybe its only a small startup capacitor that need to be replaced.
What information or pictures are needed to get your help?Last edited by pr0cess0r; 10-10-2017, 08:48 PM. -
Re: Panasonic Viera TC-L32U22 no picture
afther more observation i think that the pcb got damaged by liqid. The black stamp whit the sufix code look whashed and some via have corosion ont theme.
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[ATTACH]129514[/ATTACH]Re: Panasonic Viera TC-L32U22 no picture
afther more observation i think that the pcb got damaged by liqid. The black stamp whit the sufix code look whashed and some via have corosion ont theme.
[ATTACH]129512[/ATTACH]
[ATTACH]129513[/ATTACH]...Leave a comment:
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Re: Panasonic Viera TC-L32U22 no picture
i will try it!Leave a comment:
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Re: Panasonic Viera TC-L32U22 no picture
rebel?! reflow?Leave a comment:
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Re: Panasonic Viera TC-L32U22 no picture
i dont find at test point on the pcb...Leave a comment:
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Re: Panasonic Viera TC-L32U22 no picture
i alredy did this. i also did a firmware update from sd card... to me its 100% sure that back light is working properly. look like no lvds signal. is there any fuse on this signal i dont know.Leave a comment:
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