TDS544 Schematics? - Bad -15v Power Supply

[daveyk]

I found the service manual but no schematics.   The -15v supply J26-7 is only -12.5 with the ACQ board un-hooked.  So my problem appears to be that  main big power supply.  I a not sure how to fire it up outside the scope in order to trouble-shoot it.  If I pull the digital board off, the I can not turn it on with the front panel.  There is probably wiring to turn on the power supply, but without prints, I don't know how to do that.  Even if I can figure out where the -15volt supply is, I could possible shotgun it.

If someone has prints could you please send them to me, or reply with a link?

Thanks so kindly,

Dave

[John_ITIC]

Sorry, I don't have any links but I just wanted to suggest keeping this scope repair in a single thread. It appears you've created several threads for the same issue?

[daveyk]

Sorry, I'm not sure how but that was with the iphone. I tried deleting my threads and the forum won't let me.