I just fixed one of these for a buddy of mine, this would’ve been very helpful about two weeks ago. Had the same two mosfets in the power supply shorted, and one side of the power amp mosfets also shorted which also gave me a ticking sound when starting up. Great to see someone working on this stuff!
These types of amplifiers can terrify you twice: the 1st time being when you have to pull the circuit board out of that cramped chassis, and the 2nd time when you power it up again after a presumed repair and reassembly, and are crosding your fingers that no magic smoke will be released. There's also the fear that 400 watts output might blow up your speaker-substitition load box. It would have been interesting to see you measure the output power! The other thing that didn't get mentioned in this series is the possibility of blown capacitors; switching supplies have a tendency to beat the crap out of the electrolytic capacitors which are often found to be visibly swollen and bulging.
Hi Dave Really enjoyed your 3 Tiny Terror episodes. Very interesting indeed.Gave insight into class D amplification. This was the amp you were repairing when I came with the speaker ? Keep em coming Dave !
I just fixed one of these for a buddy of mine, this would’ve been very helpful about two weeks ago. Had the same two mosfets in the power supply shorted, and one side of the power amp mosfets also shorted which also gave me a ticking sound when starting up. Great to see someone working on this stuff!
Thanks 👍
Cheers, good insight into class D!
These types of amplifiers can terrify you twice: the 1st time being when you have to pull the circuit board out of that cramped chassis, and the 2nd time when you power it up again after a presumed repair and reassembly, and are crosding your fingers that no magic smoke will be released. There's also the fear that 400 watts output might blow up your speaker-substitition load box. It would have been interesting to see you measure the output power! The other thing that didn't get mentioned in this series is the possibility of blown capacitors; switching supplies have a tendency to beat the crap out of the electrolytic capacitors which are often found to be visibly swollen and bulging.
Yes a different approach to servicing these is required, thanks for your comments
Hi Dave
Really enjoyed your 3 Tiny Terror episodes. Very interesting indeed.Gave insight into class D amplification. This was the amp you were repairing when I came with the speaker ?
Keep em coming Dave !
Hi Dave thanks 👍
Hola, sabes que mosfet usa el orange terror bass TB1000 y en que orden se instalan en la placa base?