[R-390] T603 transformer
Renee K6FSB
k6fsb.1 at gmail.com
Sat Dec 28 13:14:12 EST 2024
Kevin -
possible suggestion,
move T602 to T603 fixes the line audio issue, replace the the now empty
T602 with standard table top radio xfmr 5K to 8 ohm AND replace V603
with 6AQ5 ...some circuit changes required (simple cookbook)
and do put a load on output of line audio 2W 560ohm to prevent future
failure
I have had to do this for a couple of R390s
this mod does eliminate any extra transformers to run 8 ohm speakers,
better audio too.....
similar can be done for R390A
Renée, K6FSB
On 12/28/24 8:13 AM, Kevin Schuchmann via R-390 wrote:
> Hi All, me again
>
> PTO worked fine this morning so I'm thinking it was those caps.
>
> I looked some more into my line level issue and T603 is indeed open on the primary.
>
> Would anyone have a parted out audio module that they would be willing to pull the transformer and sell it to me?
>
> Thanks
> Kevin
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