Mulja tv repair portal
Equipment Repairs => LCD TV forum => Topic started by: clueless?? on March 15, 2011,14:42:39
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hi guys, i have an acoustic solutions tv, model number lcd32761hdf. It isn't switching on, is just stuck in standby with a blue light flashing. The board number is 17pw26, could anyone tell me which capicitators i'll have to change to fix it?
thanks in advance :sign0144:
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Hello,
Check the large diode D893,(centre of pcb, between heatsink, and large transformer),
and link J130 on print side, these can cause this problem.
Regards,
John.
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Thanks so much, it was exactly that Tv is all fixed now and working perfectly.
thanks again
top man
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Hi,
I'm also new here
I've a medion md 30281 and it has also a 17pw26 power supply
I've been searching for D893 but I've found none.
The fault on my LCD is the same as that one in this topic.
Anyone a solution to this?
Robsky :sign0085:
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Hi Robsky,
Have a piccy - Chris
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also as well as the diode failing it somtimes blows a smd 0 ohm link very close to it.
good luck
daz
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which john has already said in his post.
i am slow today!
either too much beer or not enough?
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Well,
I've seen but there's nothing as a D893, at that place I've a D881
It's a UF5402 (200V 3A)
I'm going to test that one tonight and hope that's the little jerk :-)
Robsky
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I've looked,
the Diode D881 is OK
I've bridged J130 to D881 but still nothing.
its a 17PW26 V3
Anyone a shematic?
Robsky
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Hi Robsky,
How about a pic of your board that we can chew over
Locating teeth - Chris
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Here is the board of my television
Greetz
Robsky
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Hi Robsky,
You're right, it's different - haven't seen that one B4 - Chris.
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So, Chris
You've also no idea?
Greetz Rob
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Hello Robsky,
Here's a link to schematic etc., on the 17PW26 power-supply.
http://www.megaupload.com/?d=ZRZ48WE9
Good luck!
John
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Thanks,
but mine is a V3 board,
it isn't the same :-)
After my endexams I'll get a look at this TV
Greetz Rob
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Hi Rob,
Here' the Rev: 3 version, although they're all pretty similar,
Regards,
John.
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hello there im new and i also have problems with the 17pw20 board but mine is the v 1 board ive been told a trick to over heat C878 and c877 and it work for a few mins but it went back to stantby mode
is there a quaick fix cause ive not got the parts at the mo ( due to lack of funds)
thanks
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what do you need?
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what do you need?
i would like to know if i could link c877 and c878 which are the cause of the standby problems (same has clueless??) but my board is the v1 board
or do i have to get new capacitors
p.s thanks for youre help
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what do you need?
i would like to know if i could link c877 and c878 which are the cause of the standby problems (same has clueless??) but my board is the v1 board
or do i have to get new capacitors
p.s thanks for youre help
hi did you get result i got same problem
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Hey guys, Im new here and will try to help out in return but seriously doubt my electronic knowledge would help any of you guys xD anyway im posting here because a quick Google search showed me this place is the best when it comes to fixing televisions, and there is already a thread for me to hi-jack!
So i have the 17PW20.1 (version 1?????) board of the same television(AS LCD32761HDF), with the same problem! cant get past standby.
under closer inspection the Q814, C878 or Q840 piece emits a spark whenever i try and power up, I'm not sure if this information helps but common sense tells me that just isn't right.
Anyway, looking to buy a repair kit, hopefully not a full new board, and was hoping you guys (and gals) could point me in the right direction!
Thanks in Advance!
Matt!
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Common faults with these are usuallyQ814,Q813,C877 and/orC878(15nF 1000v must be 5%tolerance,Ic289,C817,C801,C901 and C892.As aksed by one of the Posters, you do have to replace C877and its mate C878,and have had that fault a number of times.Last week the only fault on one of these boards was Qty2 x bulged caps C817 and c857.To buy the proper caps C877 etc, had to purchase though Ebay to China, and bought qty 10 off to make the purchase worthwhile...will soon need more.
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Hi
Rob
Check the items in Red, remove the diodes from the board to check..especially the one to the left of the main transformer (which is probably the suspect)
The caps I circled in blue check the values and if one is 2700uf x either 16v or 25v change it, if you struggle getting a 2700 pop a 3300 of the same voltage as removed, I have never had any problems doing this...just dont put a 2200 in
The component circled in green just check for cold joints and to be on the save side desolder and get some tin/lead solder on there :57:
And to confirm what watteau said, version 3 is near on identical, I think the only difference is the flick switch on the side of the tv, hence the black and white 110/240v connectors to the top right of the board
Hope this helps
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i have a 42" accoustic solutions lcd tv its stuck in standby model number lcd42762hdf circuit board number 17pw12-2 anyone have any ideas please :sign0085: