Hello there,
Two weeks ago I purchased a valve amp which looked like the k4040 on the outside, but appears to be an earlier model. It is equipped with EL34 valves.
The two main boards are marked P4000A’2, and there are no led indicators on these boards.
However, it was a good price, so who cares.
After using the amp for about an hour there was a short burst in two of the right channel valves (V2 and V3).
Right channel stopped working, but both valves kept on glowing.
After opening the housing I saw 8 burned resistors, marked J and corresponding to mentioned valves.
Also the fuse on the right hand side of the capacitor board was blown, a 1a slow fuse.
As I have no schedules or manual of this amp I wondered if you can provide me with a possible solution. Just replacing the resistors and fuse doesn’t look the right way to me.
Do you also have some more information about type, possible age of the amp and the specifications ? As I have nothing right know, any information might help.
Or, is there something like an upgrade kit to improve the amp ? Or to improve the looks, it is possible to order the chrome socket covers ? Off course only if they will fit.
Thanks in advance for your help
Norbert van Oosterhout