Yea, I have calibrated it using its own built in tool and it completes successfully. I have double checked the readings of AC and DC and they are spot on. I may just give up on this amp.
I wouldn't give up at this point unless this amp simply has no value, as far as you're concerned.
Same here, I have seen @Perry Babin help a lot of people get there amps up and running. It sounds like yours is something very obvious that is being missed. Perry will help you get it figured out.
Im not, just frustrated. It seems like everything ive checked is good. Short of pulling every single part of this thing im not sure how to proceed.
Confirm.
The amp produces signal on the output transistors, correct?
But when you connect a speaker load, that signal disappears. Is that correct.
Please don't remove anything at this point.
The amp produces signal on the output transistors, correct?
But when you connect a speaker load, that signal disappears. Is that correct.
Please don't remove anything at this point.
Ok, so I grabbed a good amp, ran a 50hz audio mp3 through it and my scope set to auto see's it no issues. When trying on the Eclipse amp there's nothing on the speaker terminals. on the third leg of the output fets on one side im seeing 60hz, the other side i see 70hz but still nothing on the speaker terminals. Connecting a speaker to the amp terminals the signal disappears from the fets.
Driving a 50Hz signal into the amp, you shouldn't see a 50 or 60hz signal and you shouldn't see two different frequencies. Try a 250hz frequency and see how things change.
When you state that the signal on the FETs disappears, are you referring to the PS FETs?
When you state that the signal on the FETs disappears, are you referring to the PS FETs?
Those are audio but they're not FETs. They're BJTs.
The FETs are near the transformer. K3057s?
Do you lose drive signal on the gate legs of the FETs when you lose output on the output transistors (A1694 and C4467)?
The FETs are near the transformer. K3057s?
Do you lose drive signal on the gate legs of the FETs when you lose output on the output transistors (A1694 and C4467)?
Does it shut down, no matter what channel you load?
Does it shut down at lower volume?
What are you using to power the amp?
Does it shut down at lower volume?
What are you using to power the amp?
Ok, so not sure im getting correct readings still. I set the scope to auto and no matter what I touch with the scope it shows 60v, 80, all over the place with a steady wave form. This pic is the probe touching my finger. Second pic is prob on one of the rear speaker terminals on the amp. Power supply is PS-26KX
Attachments
its a cheap china scope Fnirsi 1014D, its powered by usb off of 110v to 5v plug. I wasn't originally using it in auto. Im just not sure what settings to use for the BJT's...AC correct? and the probe has X1, X10, X100? The scope itself is not grounded other then what the 5v power supply is doing, the probe has a ground but I don't use it on AC, at least it doesnt make sense to me to.
Any scope that has DC coupling needs to be left on DC coupling for 99%+ of use.
The probe has 100x?
What's the resistance from the primary ground terminal to one of the non-bridging speaker terminals?
The probe has 100x?
What's the resistance from the primary ground terminal to one of the non-bridging speaker terminals?
Try the other ranges. The resistance could be anywhere between 0 ohms and infinity.
I'm assuming that by 'no reading' you mean that the meter display didn't change from having open probes (in contact with nothing but air).
I'm assuming that by 'no reading' you mean that the meter display didn't change from having open probes (in contact with nothing but air).
Correct, open screen had no change. There was nothing on any setting. Continuity (even though you said not to use it) had nothing as well
To confirm that your meter is working properly, set it to its lowest resistance range and touch the probes together to confirm that you read something very near 0 ohms.