Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default tektronix 2465 power problem

Hi, I am new in this group.
I have a Tektronix 2465B scope which has power problem. when power it
on, all the GPIB Status lights are on, fan is moving, but no display
seen.
I don't have a service manual. But I measured the center pint at
J4244, it is +4.3v to ground. Other voltages on J232B is -11.3v and
+4.3v. Both voltages look like loss 0.7v. What parts, or section will
cause this kind problem?

Any help, or light are greatly appreciated.

feng
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Default tektronix 2465 power problem

On Mar 23, 3:36*pm, feng wrote:
Hi, I am new in this group.
I have a Tektronix 2465B scope which has power problem. when power it
on, all the GPIB Status lights are on, fan is moving, but no display
seen.
I don't have a service manual. But I measured the center pint at
J4244, it is +4.3v to ground. Other voltages on J232B is -11.3v and
+4.3v. Both voltages look like loss 0.7v. What parts, or section will
cause this kind problem?

Any help, or light are greatly appreciated.

feng


Capacitors in the power supply probably failed. I replied with a
detailed message a few years back on 2465 power supply troubles. You
should be able to google search it. I don't have access to a manual
anymore. They did have problems with filter caps and fans. Take Care
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