Crate GTX65 HELP!

[nickb]

I bridged the pins 1 and 2 as shown in the attachment...

I then tried both normal input and insert and i got nothing

I then unbridged and reattached to the DSP board and still the same problem (LED flashing, no sound)

The only thing i noticed was that the LED flashes as different rates depending on the channel (which is probably irrelevant)[ATTACH=CONFIG]39681[/ATTACH]

If there is nothing when you use the insert jack then something downstream of that has a problem. There may still be a problem with the DSP but there's not much point in fixing that if you don't have a power amp. There may be a connection between the two problems but I'd suggest the power amp is the easier to tackle.

There is a chart on sheet two of the schematic that gives AC and DC readings for various test points when injecting a 1KHz 1Vpp signal into the insert jack. Check those. I suggest you unplug the speaker to protect things for the moment.

[ConorStevo]

I think that may be a little out of my ability but if i have come this far i might be able to, i am just trying to avoid taking into a technician because of the cost

[J M Fahey]

Connect the internal speaker as usual *and* connect a tested working extra cabinet at the External Speaker jack, in this model both are in series and you can have a "dreaded switching jack problem" there.

[Jazz P Bass]

Yes thats the LED, like a said i have performed the factory reset?

I think that it is supposed to blink.

[Jazz P Bass]

I think that may be a little out of my ability but if i have come this far i might be able to, i am just trying to avoid taking into a technician because of the cost

Consider what it will cost if you make it worse.

[Enzo]

Tap the tempo button at some very different speed than the flashing. Does the flashing now work at the speed you tapped? If so, it flashes because that is its job, and we can ignore it.

[ConorStevo]

Connect the internal speaker as usual *and* connect a tested working extra cabinet at the External Speaker jack, in this model both are in series and you can have a "dreaded switching jack problem" there.

THANK YOU!! Why did i not test this earlier, it seems like this problem


I plugged in another amp into the external speaker jack... I get sound from the amp i plugged in

I then moved the jack a little and found that the internal speaker started to work, therefore, there must be a problem with the external speaker jack? i think...

[ConorStevo]

Connect the internal speaker as usual *and* connect a tested working extra cabinet at the External Speaker jack, in this model both are in series and you can have a "dreaded switching jack problem" there.

i think this is the problem on the external speaker jack

[ConorStevo]

I have now fixed the problem, the exit speaker jack had an incomplete connect, i apologise for dismissing your idea, thank you for you help!!!

[ConorStevo]

Thank you all for your help, i have now fixed the problem by soldering the spring clip things in the external speaker jack (i doubt ill need to use it but if i do i will replace the jack)

Now that it is fixed, there is a slight bit of noise from the speaker (more than i recall before the break), any ideas??