iulian Posted February 27, 2020 Posted February 27, 2020 (edited) Salut, Mi-a venit ieri EVH-ul si observ ca are un hum puternic in 50 /100 /200 hz. zgomotul e prezent cand ampul e pornit si nu e in standby Atasez o captura din eq si un sample audio. hum.mp3|Credeti ca ar trebui sa il returnez? sau e ceva normal? LE:am uitat sa precizez ca si cu vol la 0 si gain la 0 zgomutul e prezent. Edited February 27, 2020 by iulian
Puiu Posted February 28, 2020 Posted February 28, 2020 Este (ne)filtrajul de la alimentare. Trebuie schimbat ampul.
iulian Posted February 28, 2020 Author Posted February 28, 2020 oare https://www.emag.ro/prelungitor-cu-protectie-la-supratensiune-si-filtre-bachmann-connectus-6-prize-schuko-intrerupator-cordon-2m-330-105/pd/EJ8Q2BBBM/?cmpid=86968&gclid=Cj0KCQiAkePyBRCEARIsAMy5Scsv-7hICxC0drgYZPKrlxTJyCVSX6BuOHyN-067u_l6kP-yRPuk1voaAll-EALw_wcB ajuta?
vektor Posted February 28, 2020 Posted February 28, 2020 Nu prea cred. Ia-ti un servo avr ( stabilizator de tensiune automat cu servomotor ). Nu pot sa garantez ca te scapa de zgomot, dar niciodata nu e rau sa ai asa ceva disponibil. Exemplu: https://www.emag.ro/stabilizator-automat-de-tensiune-cu-servo-motor-500va-well-avr-srv-constant500-wl/pd/DK1JHSBBM/
iulian Posted March 3, 2020 Author Posted March 3, 2020 (edited) Am gasit buba. primul tub din preamp(v1) e busit si face si microfonie. am facut swap cu tubul din pozitia v4 si a disparut zgomotul. Am sunat la thoman si au zis ca imi trimit replacement tube http://support.evhgear.com/schematics/EVH_5150_III_15W_Head_Tube_Functions.pdf Edited March 3, 2020 by iulian 1
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now