This is a transformer on a subwoofer plate amplifier. I see what appears to be resin all over it. Appears almost like it has heated and leaked out or it could be from manufacturing?. The amplifier keeps blowing fuses. I did identify a blown Mosfet but I am also questioning the state of this transformer. Any insight please? Thank you!
Announcement
Collapse
No announcement yet.
Does this transformer look bad? Photo attached
Collapse
X
-
Re: Does this transformer look bad? Photo attached
The transformer is normal, it is just varnish to stop the transformer from creating annoying audible oscillation noises.
The yellow glue though might very well be your problem, see attached photos.
It becomes conductive with age, known problem for 20 or 30 years.
Ask the manufacturer why they keep using it..."The one who says it cannot be done should never interrupt the one who is doing it."
-
Re: Does this transformer look bad? Photo attached
Originally posted by mitsu2k View PostThis is a transformer on a subwoofer plate amplifier. I see what appears to be resin all over it. Appears almost like it has heated and leaked out or it could be from manufacturing?. The amplifier keeps blowing fuses. I did identify a blown Mosfet but I am also questioning the state of this transformer. Any insight please? Thank you!9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
Comment
-
Re: Does this transformer look bad? Photo attached
Originally posted by sam_sam_sam View PostCan you please show a picture of the complete circuit boardLast edited by mitsu2k; 01-08-2023, 04:51 PM.
Comment
-
Re: Does this transformer look bad? Photo attached
Originally posted by stj View Postit's not just conductive, it's corrosive and can eat through wires!
Comment
Comment