Good Day,
Im searching for Acer Aspire 4755G Schematics since the unit has blinking battery LED even though no battery attached and currently no display when turned on.The problem started when original owner trying to remove the keyboard for cleaning purpose while the unit still powered ON and shorted the IC underneath the keyboard case.Thanks.
9w2tzw
Member
Last Activity: 05-20-2015, 01:36 AM
Joined: 05-23-2013
Location: Bachok,Kelantan
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Searching for Acer Aspire 4755G Schematic
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Re: Hammax PSU 13.8V Transformer
yeah, i thought so....closer lookup, i found that the transformer wire itself had one of the wire shorted to other terminal.....since i could not get any schematic , transformer reference for replacement, is there any guide to replace it?? thanks.... -
Hammax PSU 13.8V Transformer
Hi,
recently i got one Hammax 13.8V 30amps PSU which has its secondary transformer near filter capacitor blow.The problem its, the PSU didnt had any schematic available and the blowed transformer didnt had any identification for replacement.Could anyone help me with this problem? I had attached picture of the transformer below.
Any helps are most welcomed.Thanks -
Re: HH Electronic MX1200 Power Amplifier Fuse shorted
any helps?Leave a comment:
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Acer Aspire 4551
hello,
Currently i got 2 notebook of this same model...the 1st one did not had any powerwhen swiched on, and the other one does not show any display after switched on.....already replace RAM,Reseat power cable inside casing and reseat lcd cables.Is there any way i could get the schematics?...thanks. -
Re: HH Electronic MX1200 Power Amplifier Fuse shorted
I cannot managed to get reading at ON State since i am not using time delayed fuses.I just use normal 1A fuses since at my area are hardly enough to get this type of fuses.During OFF state, i managed to get 0.45 /0.47 V at all diodes , D40-D43....Leave a comment:
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Re: HH Electronic MX1200 Power Amplifier Fuse shorted
D40-D43 i had checked and they just doing fine.
How to tests out the MOSFETs shorted or not? Thanks for reply
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Re: HH Electronic MX1200 Power Amplifier Fuse shorted
i had 2 times replacing the fuse.and they both got blown after i powered on the unit.
thanks for reminder, can i use 82 ohm 5 watt resistor to discharge the capacitor?for smaller capacitor, i use this method to discharge them.
i still dont know the exact ways to test the mosfet transistor.any guide?...Leave a comment:
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HH Electronic MX1200 Power Amplifier Fuse shorted
Hi,
Currently i got one unit of HH Electronic MX1200 power amplifier.it can be turned on without any indicator of protect LED being in ON state.But the problem is, it can't detect any input signal.So, when i open the cover, i noticed that the 1A fuse of both channel keep blown even i had replaced it.Original owner said it the power amp has gone down since he "misshorted" the + and - terminal of the speaker.Any idea? by the way i had attached the schematic for reference.
It uses 10 pair of BUZ901 and BUZ906 Mosfet transistor.total 20 for both channel.... -
Re: Ashly GQX 3101 31 Band EQ Restoration
yeah.sorry for that.my mistake
firstly i just thought the electrolytics had gone bad, but it appearently to be opposite.anyway, i too happy this week since it came back to life....
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Ashly GQX 3101 31 Band EQ Restoration
Hello there,
Since i am new to this forum, and i thought that i want to share a little bit of my experience restoring this Ashly GQX3101 EQ. The original owner is happen to be Goverment of Malaysia , and by specifically owned by gov school at my area since 1993 . This problem with this EQ , its cannot detect any input signal from all the jack / port available.In order to fix this, i had googled the service manual / any schematics available to fix this problem.For almost 4 years i tried to find both of the documents, and guess what? i got nothing. One week before, around 21 / 05...Last edited by 9w2tzw; 05-27-2013, 05:58 AM.
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