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Hi Colin, Replacing the connector sounds like the right thing to do - not sure I agree that using a NOS part is risky, there's a quadzillion backplane connectors out there that have /not/ cracked with

I read into about year ago and recalled one of the spray cans were mostly IPA. Something I used to use in the Chemistry Labs I've worked in are the squeeze bottle dispensers that can be found with an

OOPS, Caig’s renaming caught me and I stand corrected: Here is the right terminology from their website: Moving Contact Lubricant for Conductive Plastic Faders and Controls DeoxIT? Fader F-Series

He means Caig Fader-Lube: https://caig.com/fader-f-series/ De-Oxit is for metal switch and connector contacts. Fader-Lube is for sliding deposited carbon controls. Their applications guide can be had

A little late now but a good tip th Sent from Mail for Windows 10 Sent: Thursday, March 21, 2019 9:02 PM To: [email protected] Subject: Re: [TekScopes] 475 with no Display and no HV Ensure that the

I'm fairly certain you have the correct part. There are a few variations that will work. I think the main issue with the part I suggested is you can't put those tabs in that say what kind of module

Ensure that the silicon sealer does NOT cure with acetic acid. Use silicone sealer that cures with alcohol. If it smells like vinegar do not use it on electronics. Glenn

Center pin of Q741 was unsoldered. When I recapped the board I must have desoldered the wrong pin and forgotten to resolder it. Great.

Good to know. Right now I need to locate a .01uF cap with 5kv or better voltage rating. All that I have in stock only go up to 1kv. I am at the Radio Museum tomorrow. Will see what we have there.

Hi Ripley: If your scope does not fire up when you have the .01uF cap between the transformer and the NTE539 tripler then the tripler may be blown as your last note implied you tried the tripler

I concur. DaveD Sent from a small flat thingy

I have taken a photo, but I have never posted photos to the Forum, so I'm not too sure what to do next. The offending connector does seem to be brittle and has broken at the top. The replacement

Hi Colin I live in the UK and frequently exchange damaged individual contacts. ?I have no direct knowledge of the TM504, but, the best way to resolve such a problem is very dependent on the exact

I just went through this on my TM504A where the high current pin was bad so the module worked but it didn't sense high current. There were multiple problems, a bad contact and a cracked frame, that I

Colin, OK, well this is way to heavy to ship there. Even USP would be close to $100 and they are not on my "happy" list for international shipping, sorry steve

Per the service manual, page 3a-18: "To produce the intensified zone on the A Sweep trace for A intensified by B Sweep displays, an additional current is added to the crt drive signal by the Z-Axis

My suggestion would be to post a few photos of the problem connector and contact. tom jobe...

Hi Steve, Please bear in mind I live in London, UK. Colin.

Okay one more question before I dig in. How is the trace A brightness intensified when you first pull the SEC/DIV knob? I assume somehow through U650. How does it know when to kick the trace

I personally use one of the SOLD-A-PULLIT but I do have one maybe two more or less complete Pace re-work stations. These have, again assuming I have all the parts, resistive soldering, solder sucker,