Re: MrFlibbles' Viewsonic VX2835WM Problem
Caps are on correctly for polarity.
Soldering is not pretty but not too untidy, no evidence of bridging. I cleaned the board after soldering and inspected it closely before testing.
Given my testing unit (details posted previously) how would I set it up to check for dead caps?
Will get pics later as I'm at work now (lunch time)....
MrFlibble4747
MrFlibble4747
Last Activity: 03-26-2012, 06:16 PM
Joined: 02-27-2012
Location: WA
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Well got the replacement caps and soldered them in.
Powered the boards up and screen flickered backlight led's flickered for a few seconds then something went "phuttt" and now there is no power to the main board at 5V SB but 5v still present at power board (did not get chance to 5B SB before something blew. Examined main board but no sign of anything blowing. Totally lost now............Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Thanks guys. I got my Panasonic # wrong as I skipped a row when looking along the reference table........
I was referencing the Oz Element14 site so will go for Panasonic (EEU-FM1C471)/Rubycons depending on availability. Should have them later today.
PS For my ongoing education there is a Panasonic with same # with a "B" at the end. What does the "B" signify?Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Capxon items are 470uf 16V 105 Deg C. Can size is 10mm Dia x 12.5 L x 5mm pitch 0.5 Dia pins.
I've identified Rubycon 16YXF470MEFC10X12.5 as a like for like (Can size and values) replacement (I think).
There is a Panasonic ECA1CAM471X that looks to be the same values and pin spacing but differnt can size.
I guess size does not matter so long as it fits....and the performance values are correct....or does it? So many numbers and codes..........Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Have removed C124 & C126, first 1 took 20 minutes, second one 40 seconds.
Have solder wicked the mounting holes and cleared solder out with wooden cocktail stick (been watching soldering video's) and Cap pins do go through so ready to solder replacements. It's a public holiday here so shops are shut.
Will get replacement caps tomorrow (Panasonics as recommended if available).
38C here today.........workshop getting a bit warm........Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
C126 is indeed domed. They are indeed Capxon's.....
She who must be obeyed is dragging me off to the pub for a sundowner, better go so I can live to fight another day. It's a long weekend here so more play time tomorrow.
Appreciate all the the help guys. I'll drink a toast to you in about 45 mins.
TTFNLeave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
PB in main board interconnected + small led switch panel board.
Reading at 5V SB is 3.6.
No light at switch board LED after pressing switch....Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Reading 4.95. I guess this is good news so far.
This is with PB disassembled from everything else, just screwed into the metal tray with the earth lead connected to the tray and the mains plug in.
Have to say I'm crapping myself as I'm not sure if I'm heading for an electric shock.
Didn't get to this age with only one electric shock by being "adventurous"!
I'm not scared just risk averse! ;-)...Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Hi Again...
Current condition is dead as a doornail. No light, no action on power up.
Multimeter is DT830 3 1/2.
Gotta dash..hope this update hits the spot.........Leave a comment:
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Re: MrFlibbles' Viewsonic VX2835WM Problem
Hi and thanks for quick response.
Until it stopped working at all it always worked perfectly from cold start.
Problem developed from screen blanking out (possibly going into power saving mode) when not used for a while and being revived by unplugging and reconnection the power cord. Then blank screen with flickering in the background, power (blue) light flickering and going light blue or amber.
Then nothing at all. This progression took place over a couple of weeks.
Will get additional photo's...Leave a comment:
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MrFlibbles' Viewsonic VX2835WM Problem
Just to "recap" from my new member post (pun intended)
Hi All, (names Dave by the way)
I'm in Perth Australia and have a knackered Viewsonic VX2835WM which displays all the classic signs (I have since discovered) of BAD CAPS! (Little B***ards!)
I'm halfway through dismantling the beast but could not see how to take it apart after getting the screws out (found service manual so can proceed).
I'm scared of the DIY electronics repair option but could be convinced if I can get the For the Dummies guide (need to explore posts more).... -
Re: New Members - please post your introductions here
Hi All,
I'm in Perth Australia and have a knackered Viewsonic VX2835WM which displays all the classic signs (I have since discovered) of BAD CAPS! (Little B***ards!)
I'm halfway through dismantling the beast but could not see how to take it apart after getting the screws out (found service manual so can proceed).
I'm scared of the DIY electronics repair option but could be convinced if I can get the For the Dummies guide (need to explore posts more).
I'm still trying to establish if...Leave a comment:
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