Vitus PTC Protection Error

Hi



Recently purchased a 2nd hand Vitus RI-100. Upon delivery the rear panel had been bent inwards as the binding posts had come into contact with the ground/hard surface.


Managed to straighten the rear panel and the input board that also mounted on the rear panel appears fine. No signs of any other internal damage and after straightening the rear panel you would not know any damage occurred.


Upon firing the amplifier up for the first time I got a ***WARNING*** PTC PROTECTION error.


Obviously something else is wrong and my fingers are crossed this is not indicative of a major issue.


I can't find any service manual or information regarding repairs on Vitus equipment. Does anyone have an idea of what could possibly be wrong with the amplifier?
 
my guess would be that there is a soft start circuit for the main transformer.. a PTC is being used as the inrush limiter and there should be a relay or triac that bypasses it after a second or two. This bypass isnt activating.

This is a complete guess. Some pictures of the internals would help massively
 
my guess would be that there is a soft start circuit for the main transformer.. a PTC is being used as the inrush limiter and there should be a relay or triac that bypasses it after a second or two. This bypass isnt activating.

This is a complete guess. Some pictures of the internals would help massively


Here are some pictures of the internals. Unsure what to target but this an overview. The PSU is hard to show as it is mounted sideways and covered in cables.
 

Attachments

  • DSCF4053.JPG
    DSCF4053.JPG
    320.2 KB · Views: 206
  • DSCF4054.JPG
    DSCF4054.JPG
    275.8 KB · Views: 228
  • DSCF4055.JPG
    DSCF4055.JPG
    284.5 KB · Views: 205
  • DSCF4056.JPG
    DSCF4056.JPG
    340 KB · Views: 194
  • DSCF4057.JPG
    DSCF4057.JPG
    355.5 KB · Views: 197