2. amps-preamps
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oscillation in power supply filter caps

Hello, I have two VTL 225 mono blocks that I just got and I feel an oscillation in the both of the filter capacitors on one of the amps only. They were made for VTL and have a value of 3800uF and 400 vdc. Could the caps have gone bad, I have ordered replacements for both, 4900uF at 400 vdc as the units I'm sure are 30 years old. Any thoughts?
hoghead1

Showing 4 responses by hoghead1

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hoghead1 OP
30 posts
 
Thank you for the tips, I will check out the transformers and I have to make up new power cords as they didn't come with any.
hoghead1's avatar
hoghead1 OP
30 posts
 
Also one of the fuse holders is damaged and I was thinking of replacing both with better ones, they are at 15 amps each, any thoughts on replacements and from who.
hoghead1's avatar
hoghead1 OP
30 posts
 
Hello, I replaced the four filter capacitors and now I have a minor amount of resonance in all the caps now. what gives or is this normal
hoghead1's avatar
hoghead1 OP
30 posts
 
Does anyone know what the bias is on the VTL 225 with kT90's?
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