heeeelp please audio reserch 5SE - resistor blew up


hello
i just installed a 6550 in my audio research 5SE and one resistor blew up  just underneath the V5 tube and between the 6h30 smaller tube.on the left there is a black resistor


thank you very very much
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Showing 3 responses by johnsonwu

Audio Research, unlike years before, will not respond to you.

The local dealer will fleece you.

The trusty local tech will tell you the unit is damaged beyond simple repair and it will be 10 bench hours at 100/h.

Just replace the damn resistor yourself and replace that single offending tube.
Its not the big 27kOhm that blew. It’s the 1k grid resistor to the 6550 pass element. OP sent a pic to me.

"New old stock" 6550. Members with no tube testers at home are at a HUGE disadvantage. Yes! Test before install is always a good idea but OP may not have access to a tube guy. Using NOS tubes in regulators is one of the dumbest ideas I know.
Yea some people can hear the difference in regulator tubes.  I can't and you need not show me.  We are all here to try to help the OP revive his line stage.  I have had it repairing gear that's been "NOSed" by snake oil merchants.  Audio Research, Sonic Frontiers, you name it.  But too many people just get talked back into it after and after a month or two they call me again.