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Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, please confirm; a DIY (do-it-yourself) repair approach is being considered. If yes, do you have access to and familiar with a multi-meter and even perhaps a soldering iron?
If so, proposed preliminary tries (if have not been done) on:
Please post back results / observations of the above once tried.
A friendly reminder; voltage measurements by its very nature requires that the Pioneer be plugged in and therefore LIVE! Please exercise due care and caution.
Great on the DIY! ...and thanks for the pictures.
That ribbon cable appears to be on connector CN5801. Please click HERE for the relevant schematics. Of particular interest would be if ST+5.6V is present on CN5801 pin 5. If not, please check Q1101, Q1102 & Q1103.
When attempting to turn on, any audible clicks? ...particularly from relays RY1001 & RY1002 of the speaker PCB? ...how about when just plugging in the Pioneer?
Apologies for the delay; power is down and running on genset.
And try HERE.
And a review of the RESET HERE.
Doubt if it is a lock down as an error message should still be displayed if it has kicked in auto-protect mode.
Offhand, I suspect a CPU/logic circuit issue; possibly not getting correct +5 hence the above proposal of checking the ST+5.6 at pin 5 of connector CN5801.
Also relay RY1001 should click upon plugging in.
There is a resistor in the speaker PCB that affects the switching of this model. It is R1002 and should read as 7.5Ω
...and the resistor R1002 please?
If "...have the 5.62v...", then these switching transistors appear to be functioning.
SP (B) Assy (AWX8332) upright daughter board towards the rear left with the front facing you. It has Speaker B terminals and the AC inlet & outlet.
Since it is a 10Watt resistor, then should be ceramic, a bit large and if present, would be very near the back of the AC outlet.
On the same board (and only if safely able), can you please measure the ACV of:
with the Pioneer just plugged in?
And likewise the DCV of:
Yes of course; schematics of the board or board layout?
Please click HERE.
CN1002 is tied to the AC inlet and expectedly should show 120VAC.
Since "...cn1003 1.21v ...", then relay RY1002 is not clicking on. Check Q1002 circuit particularly if:
Have you checked for cold solder?
This would then make Q1002 highly suspect and would require this transistor be checked out-of-circuit. Of particular interests would be forward & reverse + gain.
Sorry; "... lock out how do i take it out..." ? Do you mean how to un-solder?
If it has kicked in auto-protect mode, then the fault has to be identified & corrected before the system would allow the unit to fully turn on.