Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: chuckebaby on October 22, 2017, 09:04:33 AM
I bought a Vox Cambridge 30R for 5 bucks at a yard sale last weekend. Took it home and noticed low output, brownout symptoms.
The same old story with these amps. After doing a test by jumping the optocoupler. I realized what the problem was.
The real problem is, I cant find these online anywhere. So my question is, what's a suitable replacement ? or can I make on out of a led and photocell ?
This is the original part VTL5C2:
https://www.alliedelec.com/excelitas-technologies-sensors-vtl5c2/70219696/
Im wondering if perhaps this one will work:
https://tubedepot.com/products/opto...K5scvTyqaLJlsa0D_czH2PNLrFW_FaCBoCAiYQAvD_BwE
Thank you very much for the help.
IF you have a bright LED, a 5mm photocell and some heat shrink tubing, do your own, that´s what I use successfully.
That tubedepot link does not work.
This should work:
http://smallbear-electronics.mybigcommerce.com/photocoupler-xvive-vtl5c3-work-alike/
Quote from: g1 on October 22, 2017, 01:46:46 PM
That tubedepot link does not work.
This should work:
http://smallbear-electronics.mybigcommerce.com/photocoupler-xvive-vtl5c3-work-alike/
Didn't even see this one. big thanks man. Have you used this site before Small bear ?
The price looks more than fair. its very good.
Not sure whats up with my Tube depot link but your right it isn't working here either. my apology's.
Thanks again.
Quote from: J M Fahey on October 22, 2017, 01:22:18 PM
IF you have a bright LED, a 5mm photocell and some heat shrink tubing, do your own, that´s what I use successfully.
Mr Fahey, Thank you kindly sir. Ive read many of your threads on the Marshall lead 12's :dbtu: Ive been a lurker here for many years. just finally took the plunge and joined. Hoping some of the knowledge will rub off on me :)
I might try this idea with the photo cell and led before ordering the optoC. thanks again.