It may work but the TIP is more likely to survive if the amp has other problems. Remember that the TIP is reversed, like the MJE.
It does but installing the (more rugged) TIP facing the opposite direction will work. Use whichever you feel is best.
What aspect of the TIP are you concerned about?
This isn't necessarily about a permanent solution.
If you want to use the MJE340, use it. Neither is likely a perfect solution.
This isn't necessarily about a permanent solution.
If you want to use the MJE340, use it. Neither is likely a perfect solution.
NOS may be counterfeit.
The power dissipation and current rating are too low.
What are you using for the desired specs?
I think you should use what you have so you can move forward. You don't want to have to wait a week for something that may not be any better than what you have.
The power dissipation and current rating are too low.
What are you using for the desired specs?
I think you should use what you have so you can move forward. You don't want to have to wait a week for something that may not be any better than what you have.
Did you try to measure the voltage?
If the cap is in the right way, ripple current or voltage are the only two things likely to cause the cap to fail. The cap is in parallel with the rail caps so, unless they're open, I don't think it's ripple current.
If the transistor opened the BE junction, that's more reason to use the TIP. The MJE is rated for less current than the original.
If the cap is in the right way, ripple current or voltage are the only two things likely to cause the cap to fail. The cap is in parallel with the rail caps so, unless they're open, I don't think it's ripple current.
If the transistor opened the BE junction, that's more reason to use the TIP. The MJE is rated for less current than the original.
thank you for all your help. I am done with this amplifier. the configuration and the sandwich type boards and having to unsolder everything is very tedious. the fact that every time I want to look at something I need to unsolder 4 output transistors and 2 thermisters is a pain in the butt. I should have left it alone!! I purchased a pair of these on eBay. 1 still works, but I won't be attempting to mess with that one. obsolete parts are another factor I just don't want to deal with.
You could have used temporary heatsinks (1" x 3/8" aluminum stock, insulated with Kapton tape, and binder clips) and extended the wires.
You may not be able to get identical replacement parts but that doesn't make it un-repairable (not generally).
Don't throw it out. You may change your mind.
You may not be able to get identical replacement parts but that doesn't make it un-repairable (not generally).
Don't throw it out. You may change your mind.
Attachments
yeah, maybe just need to catch my second wind. the tip31c did take care of the c128 capacitor blowing up.
Hi Perry, I was never able to check for voltage. Pieces of the capacitor that exploded ended up stuck to an output transistor and started to smoke. the output transistor was not damaged lucky for me. After replacing 2 resistors and the 2sc2824 ... I now have a working amplifier I've played music through for 3 days. thanks again for your help... I will now attempt to recap fearlessly the 2nd amplifier.
I could have sworn this was an electronics/engineering class. Any idea what the altering of the voltage and current might add to amplifier? These are very direct readings to take from an amplifier. I read the beginning comment on yellow wire being used. How was that not enough to power up the amplifier? Which would be from the radio/ignition, then from the battery itself.