Hi , i got Haramn Kardan HS250 from My friend , the problem is fuse was blown, i replaced the fuse , now power is ok except amplifier voltage , i am not getting any out put from smps to amp section, any one can help me where i need to check to find the faulty , i attached here service manual.
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Re: HARMAN KARDAN HS250 Fuse blown
Can you please upload good clear pictures for us to see so we can see what we are dealing with?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: HARMAN KARDAN HS250 Fuse blown
What you attached is the owners manual. start by downloading the service manual and check the parts in the pfc circuit, Q501, R506,507,510,512, then check Q509 & R572Comment
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Re: HARMAN KARDAN HS250 Fuse blown
Sorry, it was my mistake, any way now i just found a trace blown near to big filter capacitor side on high voltage rail, that provide supply voltage to the smd ic after i join with a piece of wire power supply is ok..
But i dont know the exact reason to blow out that trace, i found that the yellow glue got very dark brown when i check its c conducting using multi-meter its shows some slightly conducting
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I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
HP Modelnumber: 14-dh0061nb​
This laptop had a shorted cap on a Vcore section. After replacement is works again. But there is still a battery issue.
The battery is HT03XL and with the built-in component test from HP, in the Power section, I get an error: Logic State: Calibration required (20), Charge state: Blown Fuse (42)
I have another same battery, also with error: Logic State: Very Weak (70), Charge state: Blown Fuse (42)
And a third battery TF03XL (looks identical) with error: Logic State: OK (0), Charge state: Blown Fuse (42)
All these 3 batteries are charging... -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
Hey,
I have a Gigabyte 980TI Windforce. No shorts on the main 8 pin PCIE power connectors. The 8 phase buck converter inductors are showing 2.5ohms.
The card doesn't power up at all - no lights, no fans, nothing. I noticed that all of the 8 phase inductors are showing 0V. I couldn't find a fuse for the 8pin power connectors.
I did notice that the PCIE x16 connector 12V line has a fuse F3 (10A marked on it) which is blown. It is reading 16ohms on one end.
1st Question: Is there some logic on the board that checks the 12V on the PCIE x16 bus connector... -
I found that fv1 on one side i have 19v and on the other side 0v.
The fuse is 3a 32v FOR BACKLIGHT.
I do not have such a tiny fuse.
Can i replace it with a wire and what size.
I know i am overpassing fuse but i don't have any other solution.
Thanks
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