Re: HP F1523 - 2 secs display then darkness
Hi everyone
Thanks for the new contributions. This forum is seriously impressive.
My apologies but I haven't had a moment to progress this week and unless I get a spare hour or so tomorrow, I probably won't until early next.
I'm not in a position to try alternative lamps, so my plan of attack will be to try Anno's suggestion re - I102/I103 and then digest Kikkoman's and Bobdee's comments.
Its a shame work gets in the way of everything interesting...
CariadBach
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Last Activity: 04-11-2010, 12:06 PM
Joined: 02-13-2009
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Re: HP F1523 - 2 secs display then darkness
2nd attempt with images...Leave a comment:
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Re: HP F1523 - 2 secs display then darkness
Hi everyone
I'm at a loss in search of the inverter fuse.
As BobDee suggested earlier, some improved pictures should help. Please restrict your mirth at my soldering prowess to 5 minutes only :-)
Hi Krankshaft
I'm attempting to answer your question without displaying my true ignorance here. Are you referring to I102 & I103? If so, the print is very faint but I can read P600 BD4C15.Leave a comment:
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Re: HP F1523 - 2 secs display then darkness
Hi
thanks for the updates Anno, EgueVarae
Maybe I've been a bit of a duffer here!
There is a rather obvious fuse with rating T3.15A/250V located near the power area of the board (top right of the 1st picture posted).
I assumed that it was simply a fuse similar to the mains supply fuse i.e. to restrict the current draw. The fact that power is getting through made me ignore it.
Is this the `inverter` fuse? I'll find out tomorrow regardless because I can swap out ...Leave a comment:
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Re: HP F1523 - 2 secs display then darkness
Hi everyone
Thanks for the information to date. It's super and I'm having a blast!
PCBONEZ, thanks especially for the Elite spec - its all making sense (slowly...)
So far I have replaced 5 caps (albeit with Jamicons from Maplin).
The caps replaced are the 4 Elite ones detailed previously and a Su'scon 220uF 50V one simply because Maplin had one in stock.
For the record, the remaining electrolytic caps are:
a large 100uF 400v 105C Rubycon...Leave a comment:
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Re: HP F1523 - 2 secs display then darkness
Hi Bobdee
Diolch yn fawr ;-)
My impatience got the better of me this lunchtime & I replaced the 4 listed caps with Jamicons from Maplins.
However, no joy - the same problem. 2 seconds of brilliance then the backlights are no more.
So, I now have 2 questions:
PCBonez - thanks for your offer of identifying suitable replacement specs. Do you have enough information to work with?
Everyone - any ideas where the next are of diagnosis is?Leave a comment:
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Re: HP F1523 - 2 secs display then darkness
Hi again
I've been reading up to try and answer my own question.
Yes, the 4 large caps are Elite. The series is PF(M) and the sizes are:
2 x 1000uF 16v 105C
2 x 1000uF 25v 105CLeave a comment:
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Re: HP F1523 - 2 secs display then darkness
Hi FixItNow & PCBonez
Many thanks to both of you for the prompt replies.
I can source replacements for the large caps from my local Maplins.
PCBonez
Apologies for my ignorance - I'm rather new to this level of fixing things. What do you mean by `the series`?Leave a comment:
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HP F1523 - 2 secs display then darkness
Hi
Firstly, may I say what a super site & forum to stumble on!
I've looked through the other posts in this section and whilst I can find many similar items, none seem to address this suitably.
I have a HP f1523 monitor which, when powered up will display a good image for 2 seconds and then darkness. The power light remains green and if I switch off/on I get the 2 seconds of picture again.
The image is there through the darkness, so I have assumed a backlight problem.
This monitor has 2 boards: 1 to handle contrast etc. and...
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