rnagi77 Posted June 4, 2021 Report Posted June 4, 2021 Dear All Due to sudden voltage spike last night - my stax vaccume tube amp srm007TA diode burnt out. Can you guide through the process to fix this issue? I have attached the images below for reference. Hopefully the PCB seems to be intact. But i am not a expert and any advise is highly appreciated Thank you Quote
kevin gilmore Posted June 4, 2021 Report Posted June 4, 2021 (edited) https://www.head-fi.org/threads/stax-srm-007tii-amp-tube-rolling-bias-adjustment.653258/post-16389801 this person published half the schematic. This schematic is similar to, but not the same as your amp which has dc filaments. you need to replace all the parts including the diodes and capacitors. the other high voltage caps don't look very good either. and likely one or more of the tubes are bad. Edited June 4, 2021 by kevin gilmore Quote
rnagi77 Posted June 4, 2021 Author Report Posted June 4, 2021 Thanks so much Kevin for your response. Would you suggest - its still feasible to source and replace all of them. From cost point of view - would it be a major overhaul. I live in india and still searching for a Hi-tech service stores who can repair it. Kindly advise. Quote
kevin gilmore Posted June 4, 2021 Report Posted June 4, 2021 don't know about buying parts in india. parts in usa are around $150. Quote
justin Posted June 10, 2021 Report Posted June 10, 2021 Before you do anything, clean the inside of the amplifier Quote
rnagi77 Posted June 23, 2021 Author Report Posted June 23, 2021 Sure - got this cleaned up and diodes/caps replaced. Working fine now. Thanks for your inputs Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.