> sorry for late snswer, and sorry because I lost Your reply message.
> But I do what You suggested ,and You were right, it is not
> LM348 problems.
>
> I try to check all Power Supply Volts.
>
> 1 ) I adjust the 5 Volt trim in Power Supply Board, because I
> measured 4,75 Volt ( Set to 5,00 )
>
> 2 ) DC OK volt is easy to set, just turn the P.S. Trm andthe
> P.S led light .
> I measured the Volt for the DC OK and it is 2,95 V .
> If i try to turn the trim V2,95 remain the same.
>
> 3) I do all the adjustnente as requested , But Master Volume
> Led not turn ON ,
>
> 4) Isee the new Jack in the Phone/Hi/low Exit connected BAD.
> as in the schematics I see The insulated Jack are bad
> connected ,in fact YELLOW cable goes to the Jack GND !!!!!
> This mistake I think was made at Italy fender Repai
> centre " Casale Bauer " where They update the Firmware to REV 8.0
> I try to fix this problem , and Polaris ,start to play
> again , but MASTER volume Do not WORK .
> Started to hear pushbuttons click at first, and
> magically after few minutes Polaris starts playing.
> after few minutes Polaris Stop Playing. Mamma Mia
> !!!!!!!!!!!!!!!!!!!!!
> Do You think it is Bad Jack Output Connections ?
> https://docs.google.com/file/d/0B2RFytG_u-I5V2NMUlhQSmZ1SVE/edit
>
> https://docs.google.com/file/d/0B2RFytG_u-I5bVdMa1dpbUNTeFk/edit
>
> As You see in these photos the jack were connected with GND
> in the Signal place !!!
>
> 5) I'm waiting to finish to test the GND in Polaris
> circuitry, I ask a friend HAM, expert in repairing HF radio (
> DRAKE Collins, .) to better do the job.

For some reason Google Docs won't let me view those images.

If the output jacks are wired improperly, that could make the audio output
not work, but it couldn't prevent the calibration from turning on the MASTER
LED.

I think this problem cannot be solved without directly examining the
instrument with a scope.

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...