One of the very few repairs that I refused.:( 09-10-2016, 01:18 AM g1 Like JM said, in the Rumble 150, the power amp and SMPS are a combined module and replaced as such.
Worst case this looks like a fairly simple flyback converter with a singe-chip integrated amplifier.Bewildering. 09-20-2016, 04:56 PM lowell Makes sense that when the MOSFET shorted it took the PWM with it.Please not Google Cloud or any one which requires you to open an account, register, give them your blood type or free access to your home banking or similar unwarranted privacy invasions. 10-01-2016, 08:13 AM lowell Juan.
The file(s) you have just uploaded can be retrieved using the link or URL provided below.SPP 08N80C3 SP000013704 SPP 11N80C3. 3k* SP000085183 RF-Dual Transistor Arrays BFS 17S 3k...I think having the cap on flying leads like that is a bad idea.Toshiba distributor Mouser Electronics stocks Toshiba high-quality semiconductors and components.
I am willing to order and replace for the experience of troubleshooting SMPS.SPA08N80C3 s pdf datasheet. 08N80C3. SPA11N60C3 Equivalent, PDF Data Sheets. spa08n80c3 pdf Pdf.Equivalent Circuits of Transistors tutorial all along with the key concepts of Bipolar Junction Transistor, Transistor Models, Common Base Configuration, Common.Also, the NTC thermistor is dead short in circuit with no power on.
To me that would suggest a series resistance of at least 3.7K to ensure that is never exceeded.There is usually a reference design and equally often that is what you will find on the board.Fender will not release the power amp or supply schematic for the very good reason that they have no clue themselves about it.All you get is the voltage pinout of the SMPS block diagram. 09-09-2016, 09:44 PM lowell Gotcha.
Obviously the 1k to 10k values you have tried so far will both burn any IC and explode themselves. not by chance what happened so far.Source Top Quality Transistor 13002 Supplier, Transistor 13002 Companies,.As I understand it, this should be a large resistance when the amp is off to suppress inrush current.If this was shorted could it cause the amp to draw too much current and REMAIN in an over current status.Originally Posted by lowell Ok so the switching MOSFET is dead short on all 3 pins.The link or URL you must send to the recipient(s) of your file(s) is.Please give me some feedback.I may or may not go any further with it.
I am actually studying SMPS, will start using them.:surprised.Originally Posted by lowell Thanks Nick. I did. There is not start up resistor in the datasheet.IOW, a 40V drop of your supply of (probably) 320V is fine. 09-20-2016, 10:07 PM nickb Quote.Say you choose a 6.8K, at 6mA it will dissipate 0.25W. So you pick a 0.5W one to act as a fuse.SPP08N80C3 PG-TO220-3 08N80C3 PG-TO220-3 Rev. 2.91 page 1 2011-09-27.It will be there for 28 days only and self erase, so I suggest all those interested, even if thinking of future use, to download it now.Looking for the best price. 09-22-2016, 09:54 AM J M Fahey This is a Newark ad.In order to aid your search,. 08N80C3 08Z1 08Z2 09375459 096A 0THTH10007A 1-202-933-61 1-212-853-00.Once you know the circuit you can figure out the resistance. 09-19-2016, 06:20 PM lowell Thanks Nick. I did. There is not start up resistor in the datasheet.
The file(s) will be available on the server for the next 28 days.It adds inductance in series with the transformer which in turn will lead to unclamped spikes that will take out the MOSFET.Originally Posted by lowell Makes sense that when the MOSFET shorted it took the PWM with it.They probably drew up a paper spec and some Far East company did all the engineering and put the Fender name on the silk screen.Datasheet example is a 19V 3A supply, go figure, so we are talking 60W DC output.MOSFET N-CH 800V 8A TO-262 Transistors 08N80C3 SPI08N80C3. equivalent transistor bt131.