Tektronix tds 460A PSU

[vectra_1098]

Hi ,

I have another Tektronix Scope a TDS 460A with a failed power supply.
Does anybody have any schematics/pcb layouts for this PSU ??

Thanks in advance...

[pbarton]

Some info here  https://www.eevblog.com/forum/repair/tds400-power-supply/msg2138764/#msg2138764

[Dacke]

There isn't really schematics available for the TDS *** scopes as far as I know.   When I rebuilt my TDS 420's power supply I used the schematic for a Lecroy 9354A power supply,  it is about 90% the same power supply,  you just have to be aware of the differences.  I'm not sure if the TDS 460 has a similar supply to the 420,  but a link is here:  http://bee.mif.pg.gda.pl/ciasteczkowypotwor/LeCroy/LeCroy_9354A-M-L-TM_Service_Manual_Complete.pdf  -  pages 8-195 and 8-196.

[shakalnokturn]

Is it the PS-1690 model you have?

[vectra_1098]

Hi,

The PSU has a TEK number on the top silk TEK 119-3939-02
I tried to send a jpeg photo but the site failed to send it

Thanks 

[z80tw]

Just fixed my TDS420A yesterday,couldn't power on.the LVPS failed on Line voltage 110V but worked on 220V,
I took out the power supply board and replaced the C10(22uf/50V).it works now.

[vectra_1098]

Hi,

The photo you just sent, I am pretty sure its the same PSU as mine.

I do have problems though my GREEN Module is damaged and I have removed it from the PSU,
I do recall that there is some  schematics for them ?
 Somebody actually removed the green coating to reveal the circuit ?

Thanks

 

[ctbully]

You can find the service manual here https://elektrotanya.com   

[shakalnokturn]

Hi,

The photo you just sent, I am pretty sure its the same PSU as mine.

I do have problems though my GREEN Module is damaged and I have removed it from the PSU,
I do recall that there is some  schematics for them ?
 Somebody actually removed the green coating to reveal the circuit ?

Thanks

[maxxim]

Hi, what is the value of the tantalum capacitor on the underside power supply pcb (hybrid pin 13-19).
Thanks