Re: TOA BG-130 Amplifier power supply fuse blown
Sadly, not yet. I'm still searching for one.
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Re: TOA BG-130 Amplifier power supply fuse blown
have you got a link to service manual ?Leave a comment:
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Re: TOA BG-130 Amplifier power supply fuse blown
the fuse itself actually appears blown, there's a bit of soot inside the glass.Attached FilesLeave a comment:
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Re: TOA BG-130 Amplifier power supply fuse blown
Look at the blown fuse closely, if the fuse element looks like it is still there but broken open, it could just be fuse fatigue. Usually if there was a short the element will be totally missing and the glass will be black.Leave a comment:
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Re: TOA BG-130 Amplifier power supply fuse blown
Since F101 is on the Primary side of the Transformer, it could very well be a 'tired' fuse. Assuming you do have a DMM, measure the DC resistance across the transformer's Primary winding. It should be high. If you get no reading, the winding could be open or there might be a thermal fuse built-in the transformer. If you get low then there is a short in the winding. If there was a problem with the Output Transistors/ICs then the F102 on the Secondary would have blown. Just replace the F101 with the same rating and give it a try....It will work.Leave a comment:
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Re: TOA BG-130 Amplifier power supply fuse blown
could be shorted output devices or shorted rectifiersLeave a comment:
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TOA BG-130 Amplifier power supply fuse blown
This amp appears to have a basic unregulated power supply which is protected by a 1A fuse on the input side (F101), and a 3A fuse on the output side (F102).
Power from mains through F101, into the transformer primary
Unknown voltage out of transformer secondary through F102, and into a full wave bridge rectifier, and then through a 63V 4700uF cap. I'm assuming the secondary voltage is lower than 63V, lol
F101 is blown, and If you guys have taught me anything it's not just to replace a fuse and plug it in..
On visual inspection of the board, the area around D109/D110/R179 has gotten hot and discolored the board, and I'm currently trying to trace how those might contribute to my problem.
Do you guys have any ideas where I should troubleshoot?Attached Files -
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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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