![]() |
|
|
Thread Tools | Display Modes |
![]() |
#161 |
Member
Join Date: Feb 2014
City & State: montreal/quebec
My Country: canada
I'm a: Knowledge Seeker
Posts: 34
|
![]() ok thanks guys, now i need to get some equipment and spare parts
Last edited by manthi; 02-26-2014 at 01:58 PM.. |
![]() |
![]() |
![]() |
#162 | |
Slow Learner
Join Date: Dec 2010
City & State: Lancashire UK
Posts: 7,857
|
![]() Quote:
If you are ordering get at least 2 extra. As already said it best to resolder ALL the high voltage joints - suggest remove as much of the old solder as you can and replace with fresh leaded solder. |
|
![]() |
![]() |
![]() |
#163 | |
Member
Join Date: Feb 2014
City & State: montreal/quebec
My Country: canada
I'm a: Knowledge Seeker
Posts: 34
|
![]() Quote:
when you say [resolder ALL the high voltage joints ] do you mean the 4 inverter transformers t801-802-803-804? i am going to practice soldering on a scrapped board, and see how it goes. what material should i buy? http://www.canadiantire.ca/en/tools-...soldering.html |
|
![]() |
![]() |
![]() |
#164 |
Slow Learner
Join Date: Dec 2010
City & State: Lancashire UK
Posts: 7,857
|
![]() |
![]() |
![]() |
![]() |
#165 | |
Member
Join Date: Feb 2014
City & State: montreal/quebec
My Country: canada
I'm a: Knowledge Seeker
Posts: 34
|
![]() Quote:
![]() it is easier to understand if for exemple you say check pf801 or resolder c824 c826 , then i know what you are talking about, anyways no matter what, all of you are of a great help, i sure couldn't fix that screen without your help |
|
![]() |
![]() |
![]() |
#166 |
Member
Join Date: Feb 2014
City & State: montreal/quebec
My Country: canada
I'm a: Knowledge Seeker
Posts: 34
|
![]() i bought a 25w weller iron,
i removed pf801, it is dead removed q808 q809, one is dead but the other one looks good, when test it i get same result than q815 q816 (over range) i resolded the c826 leg, now i need to buy the 3a 125v fuse and the c5707 , couldn't find them at my local store, so i am going to order them from ebay, so it's going to take at least 2 weeks to arrive i will post an update |
![]() |
![]() |
![]() |
#167 |
Slow Learner
Join Date: Dec 2010
City & State: Lancashire UK
Posts: 7,857
|
![]() You should replace the 5705s in pairs even if one is ok it is likely to go when paired with a new one. That is why I said order extras.
2 weeks will give you lots of time to practice soldering and learn what the parts are called. We cant always see the numbers ![]() You REALLY do need to resolder ALL if you dont the 5707s will blow within a week (often quicker) Last edited by selldoor; 02-28-2014 at 08:08 AM.. |
![]() |
![]() |
![]() |
#168 |
Member
Join Date: Feb 2014
City & State: montreal/quebec
My Country: canada
I'm a: Knowledge Seeker
Posts: 34
|
![]() i ordered a kit 4x c5707 2x fu9024n 1x 3a 125v fuse,
so it should be enough to replace my parts even if i damage one or two, the fuse is the only piece i don't have any spare, but my local store has it (the only part he has actually). so time to practice now ![]() |
![]() |
![]() |
![]() |
#169 | |
Member
Join Date: Feb 2014
City & State: montreal/quebec
My Country: canada
I'm a: Knowledge Seeker
Posts: 34
|
![]() hey looks like it's working.
i replaced the 2 c5707 and the pico fuse, and the problem is gone. but now i have the most challenging part to do, if i want to do a proper job Quote:
if i look at Capullaco story i think that is what happen to him he bite off more than he could chew, and ended up with a big spark, and a dead lcd. what do you think i should do the required steps and risk a total failure, or take a chance and leave the job as is (2 new c5707 1 picofuse and resolded polyester caps) and a BIG THANKS to all the people that contributed to this thread, it is always fun to learn new things, in the end, it cost me more than buying a used lcd, but learning something knew is priceless |
|
![]() |
![]() |
![]() |
#170 |
Badcaps Veteran
Join Date: Jun 2012
City & State: ☻
My Country: Canada
I'm a: Professional Tech
Posts: 4,873
|
![]() I just repaired a Dell E173FPb (Benq board) that had one shorted 2sc5707, and the cause was poor solder connections on components in the inverter, (transformer and cap. c735) plus other misc. poor connections. check the connections with a magnifier, I use an old eye piece from an old camcorder, but any magnifier will help, just look for what looks like a small dark circle around the components lead where it is soldered, and just resolder it. They will look something like this more or less
|
![]() |
![]() |
![]() |
#171 |
New Member
Join Date: Mar 2015
City & State: Galician
My Country: Spain
I'm a: Knowledge Seeker
Posts: 1
|
![]() Hello everyone
First say that I am from Spain and sorry for my English , I am using google translator. My monitor is a Benq T905 . Has the problem of two seconds and off . If I connect it to pc , I see the desktop and two seconds and off, after shotdown continuous green LED and shortly after passing yellow With a multimeter checked Picofuse (PF801*) = 0.04 ohms, ¿Is good? Two C5707 = Bad Two D10PF-06-6K036534 (Q812* - Q805*) = Bad *See Photo I have doubts: ¿Where to buy or compatible D10PF-06-6K036534?, I do not find What Picofuse buy considering that I live in Spain ( 220V ) ? This is good for me?--->Fuse3A 125V. Reading the post 99...Yes, I think so First photo..... Green star = Changed Yellow star = Good Red star = Bad I will change the yellow and red stars , but any suggestions? (Also I will review welds as stated in the manual....A guide on how to troubleshoot 2 seconds to black) Second photo.... Is the pic not find it anywhere , any equivalent ? Wrote the best I could , thanks for your time and work. A greeting |
![]() |
![]() |
![]() |
#172 |
Badcaps Veteran
Join Date: Feb 2010
City & State: California
Posts: 2,157
|
![]() D10PF-06-6K036534 is probably:
std10pf06 |
![]() |
![]() |
![]() |
#173 |
New Member
Join Date: Apr 2016
City & State: Szczecin
My Country: Poland
I'm a: Knowledge Seeker
Posts: 1
|
![]() Hello group, I've got the 48.L1J02.A02 board which blows fuses (the main 2A one) - I found one leaking capacitor (C605 - 100uF/450V) but this couldn't be shorting, could it? When removing it one leg simply fell away.. What else should I be looking at? I use this schematic. Things before the 4 diode Graetz rectifier are OK. I suspected the rectifier itself but it also seems OK. Right after the rectifier the best looking candidate seems the Q601. Is the STP7NK80ZFP "Power MOSFET" (on the schematic called Q601 - 2SK3264) a typical failure? How to check it. What the ohmmeter should show? Every bit of help appreciated.
Last edited by silverdr; 04-25-2016 at 05:00 PM.. |
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|