Hello out there

I brought a defective MX4000 MKII type 3334 from 1995.

The lady i brought it from told me, that suddenly one day when she wathced television, black smoke went out of it, and she turned it off.

I expected it was due to some exploded capacitors or resistors, but i can se the connector on the picture tube have a burned print circuit line.

I wondered this was due to bad connection between the connector and the pcb? or maybe a shorted deflection coil?

Onfortunatly i havnt tested the resonance of the deflection coil yet, i need to borrow a function generator

Have you seen this before?

Regards Thomas

Yes, there is also a service information, that some types of the MX and Avant should be modified in that way, that the connector should be removed and the wires should be soldered directly on the board.

But look at the pins inside the connector! They were not mounted correctly. Some of them are outside and have no contact to the pins of the board.

Wrong installation...

As a follow up, i soldered the wires manually, and it have worked perfectly for month now.

As a hint to the story, the lady told me that the picture tube was changed during the waranty. This seems to be an ooops made by the technician ;)