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Here is a better part: http://www.mouser.com/ProductDetail/JKL-Components/7153/?qs=sGAEpiMZZMucm%2f%252bFOY0TQtr%2fchrLORC0dASou9Vc3AU%3d HTH, Tom

All those voltages look good. Since the +55 volts serves as the reference for the other rails, and it is slightly low, so are the others. There is an adjustment, R1538, that sets the +55 level. If you

Hi Kevin, I am about 100 mi. north of you in Forest Hill, MD so if you ever are in the area, let me know. Regards, Tom

Ok. Mission accomplished. Here are my measurements and an image to make sure I probed the right test points. Test Point Measurement (VDC) -8 -7.97 +15 +14.98 +55 54.86 +5 4.97 +110 110.5 It seems

Press your thumbs against the bottom corners of the plug-in's front panel and push it inward as hard as you can. Push the release handle all the way in if it isn't already. Then gently pull the

Would it help to take the side cover off of the 7623? DaveD

Just tried to swap the farthest right plugin to get XY on one of my 7623As and it won't budge. The pull release seems OK. What can I try next? Thanks, Bert

You could put a Vert amp in a horizontal slot & see if the deflection is the same as the Vert axis.If not, the Horiz amp may need a tweak. ?HankC, Boston WA1HOS

That will be too dim. This is what is used: http://www.mouser.com/ProductDetail/Chicago-Miniature/715/?qs=sGAEpiMZZMucm%2f%252bFOY0TQl5YyntK1yQ0GXv3qCVdEuM%3d CML 715 5 volts, 0.115 A, T-1, wire

http://www.ebay.com/itm/5V-80mA-sub-miniature-wire-ended-lamps-2-2-x-4-4mm-Qty-10-New-/111506528233?pt=UK_Trains_Railway_Models&hash=item19f64e97e9

Thanks for the insights Michael. I will check the voltages. I don't have a second scope available to me, so I may have to figure out another way to check for ripple. I think your score on ebay is

Thanks Siggi. Your instructions are inspiring. I will get the scope in the garage tonight, pull off the cover and see what's going on. I'll report back any findings. Cheers Kevin

Like was said before, measure all the power supply test points. Measure them with a DMM and then measure them again with another scope set to ac coupling. This will allow you to look at any ripple on

Hey Kevin, I expect once you get into it, you'll find this isn't nearly as frightening as you now think it is. The satisfaction in effecting a repair is huge - not to mention the bragging rights!

Thanks Albert. I have the service manual and have begun studying diagram <10>. Not quite sure what I am looking at thus far. Perhaps when I can really study it I will start to see the light.

It happens that diagram <10> of the Horizontal Amplifier is missing from the .djvu file at BAMA. I have never downloaded the .pdf file so I don't know about that one. Anyway, diagram <10> is one of

Hi Jim. Thanks for the kind offer, and I wish we lived closer to each other. I live in the Hampton Roads area of Virginia, York County to be exact.

Hi Tom. I live in Hampton Roads, Virginia. Not sure if there are any Tek gurus in this region of the country, but would appreciate a mentor. This high voltage stuff is scary business for someone with

Hi Kevin, where are you… if your in the Oregon area, I could help. jim

Hi Bert. I do plan to open the scope up and take a look. At the very least I think I can giggle some of the transistors in their sockets, and it sounds like I will be able to take general voltage