Paging: TEK465/2465 owners

Just curious as to the level of potential interest in a pair of retrofit modules to replace the now virtually unobtainable, TEK-specific parts U400 & U800 which often seem to fail in these otherwise superb scopes. I'm not an electronics engineer, but a good friend of mine, himself an electronics design engineer, has many of these scopes, often purchased to cannibalise for spares to rebuild 465/2465s with lower hours. He is in the process of prototyping a pair of retrofit modules for these two chips which can be retrofitted by anyone with a moderate degree of soldering skill. He and two of his colleagues between them have over 30(!) of these instruments all needing these replacement chips, so this project has a fair chance of becoming a reality in the next few months. If the volumes are realistic, a ceramic hybrid-based module will be commisioned, or if lower volumes, a pcb with identical footprint to the existing chip outlines. If there's any interest in this project, let's have your thoughts. Regards, JB

Reply to
JB
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In article , snipped-for-privacy@nospam.net (known to some as JB) scribed...

Please, PLEASE ask this same question on the 'TekScopes' Yahoo group! The response should be most enthusiastic.

Even though I don't currently own either model, THANK YOU and your friend for taking this project on! I would like nothing better than to see Tek's current offerings continue to have to compete with their older stuff. ;-)

Keep the peace(es).

--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute
(Known to some as Bruce Lane, KC7GR)
http://www.bluefeathertech.com -- kyrrin a/t bluefeathertech d-o=t calm
"Salvadore Dali's computer has surreal ports..."
Reply to
Dr. Anton T. Squeegee

U400 &

to

the

which

I will do this very thing.

I know a friend is waiting to find £650 to buy a replacement mainboard for his 2yr old TDS-series TEK. He is now using his older 2430a.

cheers, JB

Reply to
JB

I've got a still-working 2465 - would probably buy the modules just for insurance, if they weren't too pricy. Do you have an estimated price yet?

You might also contact equipment repair/resellers, if you haven't.

Reply to
Walter Harley

I am frankly *amazed* by the response! I knew these were popular instruments but WOW! I am forwarding all contacts onto the designer directly. I'll keep everyone posted on the newsgroups too.

Damn good idea.

Thanks again,.

JB

Reply to
JB

"JB" wrote in news: snipped-for-privacy@individual.net:

He should not have to BUY a new board(unless he attempted repair and damaged it);they are serviced by *exchange*,you call up TEK(module services,or something like that,it should be in the manual),they send you the assy,you return the bad one in the shipping container. Or I believe they can do a "repair and return",but I've found this to be risky;they can LOSE the item.

Or he can send in the whole instrument and TEK will repair and calibrate it,they will tell you the cost over the phone.(it's may be online,too)

2yrs old should not be out of LTPS.

I note you quoted a English monetary unit,so they may have a different policy,although TEK-US may want to know about that.

--
Jim Yanik
jyanik
at
kua.net
Reply to
Jim Yanik

Thanks for the advice Jim. Yes I am in the UK. I'm sure that this TDS series scope is only a couple of years old, but it was an Ebay purchase, so no warranty or so I am led to believe. I think the £650 TEK quoted was a return and repair service as you say. I'll ask him on Thursday when I'm up in London. He keeps thanking his lucky stars that he can fall back on the various older

465/2475/2430A scopes he also keeps handy. (many companies round here seem to have sold off all of their old CRT-based scopes and gone totally over to the newer type TEK scopes. Warranty and support I suppose). Regards, JB
Reply to
JB

&

which

fair

Correction to the scope types (havving talked to the designer last night): The 465B is not included. My mistake. The actual scope types the retrofit modules are designed for are TEK2445/2465/2467.

Apologies for any confusion.

JB

Reply to
JB

I'm surprised it's taken this long for someone to do this - I'm sure modern semiconductors to replicate the original functions have been around for a good many years.

Unfortunately I think the potential market is a lot less than it was, say, 5 years ago, as digital scopes have now improved to the point where the advantages of analogue ones are minimal, and this has been reflected in the fall in used prices of these old Tek scopes. The potential 'Professional' market for such an upgrade has all but vanished now.

Of course the availability of the Teks at lower prices won't hurt sales of a replacement module, but also means you won't be able to charge anything like as much for it - a few years ago, good used Tek 2465As were typically $2-3000, and a new digital scope with comparable performance (DPO etc.) several times that, so you could easily have sold modules for, say $500, but looking at ebay, working 2465As are going for about $400, so the market will mainly be hobbyists who don't price their time for doing the repair.

I still think it's a worthwhile project, and will likely earn him some money, but nowhere near what it would have done a few years ago. Unless doing a ceramic hybrid offeres noticeable performance benefits, I doubt it's worth the investment risk compared to a PCB, which won't have such high one-off costs.

Reply to
Mike Harrison

"JB" wrote in news: snipped-for-privacy@individual.net:

Regardless of how you bought it,the instrument's serial number should show as a warranty repair when TEK logs it in for service. TEK just looks at model and S/N in regards to warranty(ONE yr),and if it's an OEM product,it gets a different warranty period,IIRC 18 months)

LTPS is not "warranty",but Long Term Product Support,the period of time that TEK provides parts and service support after the product was last sold in their catalog. It's usually 6 years after the last catalog inclusion.

*AFTER* LTPS is over,TEK-USA disposes of their exchange assemblies and parts specific to that model,and only offers calibration serivces.
--
Jim Yanik
jyanik
at
kua.net
Reply to
Jim Yanik

Mike Harrison wrote in news: snipped-for-privacy@4ax.com:

Well,the U800 horizontal output amp is NOT a hybrid module,it's a DIP IC. The IC is a specific design for differential driving of a CRT horizontal plates,with adjustable gains,and a digital control section.

U400,the channel switch IIRC,is a hybrid,with multiple IC chips on a ceramic substrate with laser-trimmed thick-film resistors and ceramic caps.

--
Jim Yanik
jyanik
at
kua.net
Reply to
Jim Yanik

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