I am trying to fix the power suppy of this TV I found in the
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I am trying to fix the power suppy of this TV I found in the trash.
I replaced the fuse and the buldging big cap. It was only after I blew that fuse I realized that a) two transistors are shorted. b) there is this burnt ceramic cap, LABELED AS A RESISTANCE on the board. WTF!?
I'm pretty sure that is not a ceramic cap but a self resetting fuse.
https://en.wikipedia.org/wiki/Resettable_fuse
>>1012962
>self resetting fuse.
Considering there's an old-fashioned fuse already, a VDR would be more likely.
The other side of the board. The leads between -[v]- on the left over the SMD 1004 resistors belong to the burnt component (blue disc).
Multimeter shows resistance of 170.
>>1012969
*the leads to the sides of
Derp
>>1012959
does it have a part name? or is it sum chink non labeled part?
>>1012967
This, desoldered it from the board, in tiny ass light writing it reads WALSIN 511K14D and some symbols.
I'll run through the scrap pile, see what I find.
>>1012983
It was jammed between that transformer and solid square cap. And glued to the second. I made the thread while I waited for the desoldering iron to heat up.
Turns out the outlet I was using had a blown fuse.
No varistors. Bunch of blue ceramic caps tho.
I hope whoever made the decision of making them the same shape and color died painfully.
>mfw googling the part number I find a guy with the same board
http://www.hifi-forum.de/viewthread-133-8176.html
Are these ones a valid substitute?
http://www.digikey.com/product-search/en?keywords=14D511K
>>1013023
>$0.28 part
>$30 shipping
Hahahaha nevermind. I'll see what I can scrounge - maybe the local shop has something which fits.
>>1012959
that blue component is a metal oxide varistor
you can remove it without replacing it, i would recommend replacing it though
as for the remaining ones, you need to replace the offending transistors and fuse (fuse can also be bypassed with a jumper but i strongly advise you not to)
>>1013052
I already gathered all that.
I just reload the fuses with the proper diameter copper wire.
So far I have found the cheapest varistor replacement to be 10 pcs from china for about $4-5 with shipping.
May arrive in August.
I trust I have enough transistors to replace them all a few times, as long as I can figure which can replace which.