Hi !
I just got in a Pro Junior and is quit new, and on this one R39 and R40 is elevated and R39 is dead.
I can't find any schematic whit that high R numbers.
Do any of you have a newer schematic for this amp ?
Best regards OJ
Pro Junior IV and R39/R40
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Pro Junior IV and R39/R40
Last edited by Healer amps on Thu Jan 30, 2025 9:20 pm, edited 2 times in total.
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Re: Pro Junior R39 an R40
I can't locate a schematic for that amp so can you post up a good picture of that section of the board please?
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Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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Re: Pro Junior IV and R39/R40
Thanks for your response Stevem !
Yes is hade to find a schematic for this amp, have written to Fender but have got no answer get.
But I did find a schematic for Blues junior (same out put section as PR)
https://www.guitarscanada.com/cdn-cgi/i ... ng.564096/
They have move to cathode bias on BJ and PJ, so the R39-40 are bias resistors on PJ.
I will probably end up making a Schematic on this one, they have made some changes in the pre amp to .
Best regards OJ
Yes is hade to find a schematic for this amp, have written to Fender but have got no answer get.
But I did find a schematic for Blues junior (same out put section as PR)
https://www.guitarscanada.com/cdn-cgi/i ... ng.564096/
They have move to cathode bias on BJ and PJ, so the R39-40 are bias resistors on PJ.
I will probably end up making a Schematic on this one, they have made some changes in the pre amp to .
Best regards OJ
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Re: Pro Junior IV and R39/R40
It's not one of these? https://www.google.com/url?sa=t&source= ... IeN21Lw8-f
I don't see R39 or R40.
I don't see R39 or R40.
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Re: Pro Junior IV and R39/R40
No that is the old schematic, I think the one am looing for is after 2022 like the blues junior i posted.
But Thanks anyway
Best regards OJ
But Thanks anyway

Best regards OJ
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Re: Pro Junior IV and R39/R40
Hi !
As I mention before I ask Fender to send me a schematic.
Well, after sending 2 mails and 2 weeks later I got A answer :As this is still a current product, the schematics are currently classified.
Like a simple amp like that is a BIG secret !?
Okay, I just make a schematic, no big deal , but I was hoping Fender was more services minded .
Best regards OJ
As I mention before I ask Fender to send me a schematic.
Well, after sending 2 mails and 2 weeks later I got A answer :As this is still a current product, the schematics are currently classified.
Like a simple amp like that is a BIG secret !?
Okay, I just make a schematic, no big deal , but I was hoping Fender was more services minded .
Best regards OJ