Re: Hitachi l42vp01ub
Ok changed that had a spare from another psu the same model but voltages still the same
Ok changed that had a spare from another psu the same model but voltages still the same
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Re: Hitachi l42vp01ub
the fault with these I believe is the PFC controller or the VCC to it. I have only done a preliminary investigation nothing thorough. Sometimes the cap goes bad, this usually ills the MOSFET/diode though.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Hitachi l42vp01ub
may be a light thing,but in the corner of the heatsink of the power supply,just to the right of the large transformer with copper coils showing,looks like a capacitor there,in the reflection of the heatsink it looks like a split in the top of it,cant quite see?,have a checkfixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Hitachi l42vp01ub
hi multi where do you mean m8 i cant see much ?Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Hitachi l42vp01ub
false alarm,that picture is better,cap looks fine,must have been reflectionfixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Hitachi l42vp01ub
ok no problem thanks anyway question.... i need 17PW16-2 V1 190608 but all im finding is 17PW16-2 V1 151206 does it matter they look the same ?Comment
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Re: Hitachi l42vp01ub
Should be fine.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Hitachi l42vp01ub
ok so had a spare psu fitted that 12 volts are now upto 11.5 volts and the 5 volts are now 4.7 volts,even the 24 volt invertors are now 23.5 volts but still i have the red lines ive attached a video to show this im sure i have all replacement parts to swop around for this tv so..... its going to be a long night
http://www.youtube.com/watch?v=UuDOuVUm35IComment
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Re: Hitachi l42vp01ub
I'd swap main board first, then t-con; if they are fine, I cannot see anything else causing this (they could be bad boards possibly.)
At least I think that the panel is fine.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Hitachi l42vp01ub
Typical board numbers match up but some connections different, so I think I'll take a chance on ordering a replacement board and praying it's not the screen after all my friend did say originally he could use the pc connection fine but avi and hdmi played upComment
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Re: Hitachi l42vp01ub
connect another tv to the tv being repaired via a scart lead,hdmi lead etc
does the lines go away?it will confirm the mainboard is working if they disappear.,if still there ,then likely the mainboard is fried.fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Hitachi l42vp01ub
I'm not aware of any method where a TV will output image over HDMI? Some TVs do it via SCART, but beware this is often not a processed signal. It is simply switched through to the output, only thing that would cause issue with it is a supply rail going missing.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Hitachi l42vp01ub
ive only ever tried it via scart,tv link to link..,the output video signal should still be a proccesed signal,coming from the video processor on the main board,if this bga chip or whatever it is that is processing the video has gone bad,it will output bad video on the donor tv via scart,and obviously the tv being fixed.
and it could narrow it down to either the t-con or panel fail.
im not saying that it works for all tv's,but it has worked twice for me,mainly on re-badged tv'sfixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Hitachi l42vp01ub
Ok tried it but nothingComment
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Re: Hitachi l42vp01ub
nothing as in what?,black screen/picture/the same?,have you switched the working tv through to its av channel?,scroll through each input on good tv.
if your not getting nothing then it has to be a mainboard fail.
ive never seen a T-CON displaying those kind of lines before,vertical yes,horizontal no.fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Hitachi l42vp01ub
Yeah wired up the tvs via hdmi leads but tried switching channels on the main tv but won't show nothingComment
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Re: Hitachi l42vp01ub
Definitely a intermittent fault somewhere now the tv is working fineComment
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Re: Hitachi l42vp01ub
hmmm,dry joints?,you said you connected via HDMI?,something just jogged my memory,have you blasted out the hdmi ports with contact cleaner?,they can cause this issue also through dust hairs etc,as with a hdmi lead that is not inserted correctly.
connecting using scart only,my typo error in previous post,it wont output in hdmi .only scart,my bad
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fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
----------------------------------------------
please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Hitachi l42vp01ub
Spoke to his girlfriend last and got a different story lol quote:
It worked properly but we kept losing signal and id have to wiggle the ariel on the bk to get picture back and sometimes it would go and I wouldnt be able to get it back for a few hours also when using scart it would cut out, wasnt all the time but every few days. Picture wise it was perfect no red lines or anything. When I used the pc through it I never had 1 problemComment
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All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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As stated by the person I collected the TV from, it just stopped working overnight. However, I still gave it a go to try and repair it.
There is a thread on the same TV but with slightly different issues where they had to tape connection points on the ribbon cable, so I want to see if this is repairable by any chance.
After bringing it home and plugging it in, the TV turned on with its backlight working but had no picture. After removing the back cover, the first thing I tried is to unplug one of the ribbon cables and the situation is as follows.
Left... -
Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesn’t display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed... -
Hi all
I have lines on the screen...which is an age old problem that can be remedied by watching Youtube videos and getting out the tape.
My issue (after successfully fixing a different sammy tv with a separate tcon board and isolating the side of the panel...):
This tv has an integrated tcon...so it is a bit more confusing when trying to isolate the clocks.
It has a c ribbon and i have taken each end out to see if that will isolate the lines. instead, it makes it much worse ALL over the tv!
So....i don't know what end of the C ribbon to work with... -
Hi guys…I need your help. My cousin ask me to fix her tv. The tv when I went to pick up showed 3 horizontal black line. So I know it was a bad panel issue but I could try to fix with the tape method so I said her I could fix easy. When I come back to home, I turned on the tv and now the tv show vertical line colored….and the problem is that I unplug the ldvs cable, first the right side then the left side I still have the lines. The lines never disappear. When the right side is plug in I don’t have nothing on the screen only this vertical lines, when the right side is unplugged I have picture...
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