Re: HP L1905 19" TFT monitor repaired
Thx!
Monitor continues to work fine so far....
steven.va
New Member
Last Activity: 06-02-2022, 10:38 AM
Joined: 06-01-2008
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HP L1905 19" TFT monitor repaired
Hi,
I repaired an HP L1950.
Symptom:
- CCFL briefly on for a moment, the shuts down
- Sometimes when repeatedly pressing on/off I could get the ccfl's
to come on, albeit at rather low light output. No shutdown then at all.
I had a spare trash picked HP 1940 with working electronics.
So I Connected the panel to it: The ccfl's came on fine & showed excellent brightness.
So panel was Ok.
Checked the two output transistors in the inverter. Q808, Q809 They seemed fine.
No bad caps. (well....they were cheap,...Last edited by steven.va; 03-16-2013, 02:55 AM. Reason: Title shows wrong model number. Would a moderator be so kind to replace 1905 with 1950? thanks! -
Re: Fix for Benq FP737s 17" (Q7T3)
My 2SC5707s arrived. Soldered them in, and my Benq FP731 works!
I did resolder the connections to transformers.
Greetings,
StevenLeave a comment:
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Re: Fix for Benq FP737s 17" (Q7T3)
Could that explain the shutting down of the inverter after 4-5 seconds?
Greetings,
S....Leave a comment:
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Re: Fix for Benq FP737s 17" (Q7T3)
Hi All,
I got a Benq 17" Q7T3 TFT like you all.
It had it's two 2SC5707 shorted, FU 9024n shorted, 3A fuse open.
So far I have replaced the fet with an IRF9540, wich according to
my suppier is a good replacement.
I replaced the two broken 2SC5707's with TIP132. I know this is not good, however it was the only thing I could get my hands on...
Resoldered the transformers, resoldered other suspicious joints too.
Powering the TFT up:
Well: it did not go...Last edited by steven.va; 12-02-2009, 11:32 AM.Leave a comment:
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Re: Mag LT916s Model 900p 19" LCD dropping like flies
No problem!
Symptom were the same as the other owners: would not startup, shutted itself down.
Greetz,Leave a comment:
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Re: Mag LT916s Model 900p 19" LCD dropping like flies
This is the model number:
MD-30917
Greetings...Leave a comment:
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Re: Mag LT916s Model 900p 19" LCD dropping like flies
Sorry for kicking an old thread.
I just fixed a 17" Medion TFT (Sold by ALDI* in Europe)
It uses the same Mirage AD-1700 board
The six caps 470uF@25V were bulged, and the 220uF one too.
I replaced those, plus the two small 100uF ones too.
Reassembled everything, and the LCD monitor works fine!
Greetings,
S.
* ALDI is a well known EU-discounter. (WallMart/...)Leave a comment:
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