Hello..I have a hifonics txi 1500d broken..Amplifiere was burned and i changed the tl494 , driver transistor,power suply transistor ,and driver hip4080, .Now the power suply work good.the problem is at output transitor because when put the power suply on the amplifier , 3 transistor from photo are very hot,in few seconds are at 100 celsius degrees.
If the voltage remains coupled transistors are destroyed(only 3 pcs).I wil put a photo for see.,.i use irf1310 all output transistor.
I wait the sugestion,what i must to check:|thank you anticipate:|😕😕
If the voltage remains coupled transistors are destroyed(only 3 pcs).I wil put a photo for see.,.i use irf1310 all output transistor.
I wait the sugestion,what i must to check:|thank you anticipate:|😕😕
Attachments
the last photo is old.i repaired the power supply..the problem is about 3output transistor..i dont know if the transistor from amplifier are changed before.Now inside are 12 transistor irf1310n.
To avoid running in circles with this amp, I'd suggest installing a new 4080 (no matter if it's currently new) and all of the output transistors with the IRF3710Z. That seems to be the most reliable way to get the 4080 based amps repaired.
Absolutely do not purchase components from ebay. Order from farnell or mouser or some other reliable distributor.
There are other components that need to be checked like the large resistors and diodes near the 4080 and all of the gate resistors.
Absolutely do not purchase components from ebay. Order from farnell or mouser or some other reliable distributor.
There are other components that need to be checked like the large resistors and diodes near the 4080 and all of the gate resistors.
Hi
I checked older posts regarding the IRF3710 / IRF3710Z /IRF1310 topic. If I get Perry correctly he suggests to always replace blown outputs to IRF3710Z ? Is this still up-to-date? I have anotherone of those 1500d´s on the desk right now. It seems that audiodesign (German sales office for hifonics products) replaces the outputs with IRF1310 .... as far as I can see this amp has been repaired already in the past. So it seems on the long run IRF1310´s will probably also fail over time. Overhere I can also get IRFP3710Z , those have the same characteristics as IRF3710Z (I belive they have the same datasheet) but allow higher currents and a little bt more power diddipation, probably due to their larger housing. Would it be recommendable to use those ? Thx, Stephan
I checked older posts regarding the IRF3710 / IRF3710Z /IRF1310 topic. If I get Perry correctly he suggests to always replace blown outputs to IRF3710Z ? Is this still up-to-date? I have anotherone of those 1500d´s on the desk right now. It seems that audiodesign (German sales office for hifonics products) replaces the outputs with IRF1310 .... as far as I can see this amp has been repaired already in the past. So it seems on the long run IRF1310´s will probably also fail over time. Overhere I can also get IRFP3710Z , those have the same characteristics as IRF3710Z (I belive they have the same datasheet) but allow higher currents and a little bt more power diddipation, probably due to their larger housing. Would it be recommendable to use those ? Thx, Stephan
Where did you get a datasheet for the IRFP3710Z?
The IRF3710Z is the best I've found but I haven't tried anything else in the last year or so.
The IRF3710Z is the best I've found but I haven't tried anything else in the last year or so.
Thx for helping,
http://www.bg-electronics.de/datenblaetter/Transistoren/IRFP3710.pdf
I´m not sure if I could place 6 of them into the original location, probably not enough space to install them, I´d need to check that more detailed but those are little cheaper to get than the IRF3710Z. I guess larger power handling would be a neat thing.....
http://www.bg-electronics.de/datenblaetter/Transistoren/IRFP3710.pdf
I´m not sure if I could place 6 of them into the original location, probably not enough space to install them, I´d need to check that more detailed but those are little cheaper to get than the IRF3710Z. I guess larger power handling would be a neat thing.....
That's not the Z version. The non-Z version in the TO-220 package won't work properly in a lot of the 4080 based amps.
That's what I would do. They have been reliable in all amps I've used them in except the MMATS amps and that's because the owners of those amps insisted on running them down to a VERY low ohm load.
i puted again a new 4080 and maybe i burned again.the ic...all component i buyed from farnell..i will buy again but 3710z..can i use only one output from hip4080 for all transistors..??
You cannot use only one pin from the 4080 to drive transistors that would normally be driven by the other 3 output pins of the 4080.
i will buy again 4080 from farnell and i conect at osciloscope first(for safety) and i will back again.😀😀😀