Toshiba 2500ts

[Edmond]

Hi Guys!

I’m looking for a schematic diagram for TOSHIBA 2500TS TV set. The vertical deflection is too small.


Thanks, for help.

 

[Nigel Goodwin]

Look for a small electrolytic (about 2.2uF) in the frame oscillator, they are a red colour, and leak electrolyte - it's almost always the fault on that era Toshiba.

 

[Edmond]

Thanks Nigel!

I changed the 2,2uF. Now the vertical picture size is too high. Near twice higher. I replaced the all capacitors around the deff. IC and the deff. IC itself, but nothing has been changed. Probably there is another fault somewhere around the IC. Probably in the back coupling circuit (sorry I don’t know the right expression in English).

 

[Nigel Goodwin]

I would suggest you need to clean the PCB VERY carefully, the 2.2uF leaks and this contaminates the board.

 

[Edmond]

There is no leakage around the capacitor. The PCB was dusty, but I cleaned it with compressed air. Now is clean.