I guess I have not soldered/desoldered my scopes enough yet, but how strong are the plated through vias on the Tek boards? DId they tend to choose good PCB fabs that have very strong plated through

TekScopes@...> wrote: It's not crazy to check the ripple after a repair like this. However, I see no possible harm in adjusting the horizontal readout jitter trimmer - it's not going to

You should check the relay coil resistance to see if it's open or intact. If the coil and applied voltage are OK, it should operate. As I recall, you can remove its cover and inspect it for mechanical

I guess I need to do more proofreading, and noticed another error in what I wrote, hopefully it was caught, sorry about the mistakes. The K601(relay) has a coil, not K600 (thermal cutoff, which has a

Hi Ben, Thank you for your response. Even after about 5 minutes of warm up, the relay does not switch. The warm up time should ideally be around 30-45 seconds, as with my working scopes (545A and

Hi all, many thanks for your input! I triple checked all cap orientations before power on, as well as all connections (cables etc.). I will check for ripple as suggested. Honestly I would have

The problem with any kind of repair or recap is that unit should be recalibrated after upgrade and the manual should mention it as my Tek 2215 does..

Hannes, Murphy's law states that anything that can go wrong will go wrong and recapping power supplies is more temptation than Murphy can stand. You can check for ripple on a pin at J119? but you

If your manual is complete, the adjustment locations are at the end of the Schematics section Dave ArtekManuals.com -- Dave Manuals@... www.ArtekManuals.com

Hi guys, where I can find the adjustment locations for this scope? In the service manual are not reported...

Dear all, I just joined this excellent forum and already got me into new troubles with my nice 2465. The 2465 was fully fine and I decided to recap the entire PSU (high voltage and regulator

Hello, This is worth a recap before looking for semiconductor issues. Paul TekScopes@...> a écrit : working condition correlation: it seems slightly better when cold and freshly

Gerald Sorry my 492BP (Volume 2/parts and schematics) manual does not have any board or schematic info on on the 671-0803 board. There is a later A64A1 board shown, 671-0372 Further review of the

Hi Dave, Although you have stated no further info on the board, does your volume 1 492BP service, Volume-1 Part No. 070-5565-01 support the 671-0803-00 Deflection amp board? My unit does not

And of course I didn't see the 198V RMS so that relay must be able to withstand at least 300VDC across the contacts... at least it does not have to carry way too much current...

I guess I had to go and look at the schematic, swiped from w140.com, PDF page 171. There's two parts, K600 which seems to be a thermal preheat cutoff, and K601 which is a multipole relay. K601 seems

Hello all, I have a 585A that seems to have a power supply issue. Specifically, the time-delay relay that lets the tubes warm up does not go off after ~30 seconds. I have tested the tube by

After some more testing, it looks like there's a reverse temperature to working condition correlation: it seems slightly better when cold and freshly powered up. This unfortunately means

On Sat, 28 May 2016, Artek Manuals manuals@... [TekScopes] wrote: Option 43 is reduced scan CRT with readout outside signal area. It makes sense it might need a different deflection

Hi, I did the calibration with a bench power supply and a simple 3.5 digit multimeter. I put an RC filter on the output to decrease noise. Yes, it takes time to step trough the 0.2, 2, and 20V