| Products > Test Equipment |
| The worst products from HP and Tektronix. |
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| tryode:
If we talk about scopes... I would add here HP54601A, it is claimed to be a 4 x 100MHz scope but it's sampling rate is only 20MS/s :palm: and it has about 4k of memory. |
| coppercone2:
service a miller 200 and then you will beg for the HP to come back when you have that stupid I beam design resting on fire bricks while you try to wash a heat sink i got to the inner transformer and I think the hp power supply was still pleasant in comparison it goes from surgeon to confined space zero gravity surgeon thats a solid chassis design, part of the requirement for maintenance cleaning is machinists jacks or stacks of wood :-+ |
| AVGresponding:
--- Quote from: Neomys Sapiens on May 08, 2023, 12:54:13 am ---I would also nominate the TDS3xx/4xx series. They were obviously a sort of learning phase in regard to user interfaces for Tek which was nevertheless foisted on the customers. --- End quote --- I rather like my TDS420A :-// |
| Chris56000:
Tek 465/465B/468 Absolutely horrible to dismantle if the H.T. and L.T. can smoothers on the main interface PCB dry out, (Even Tek themselves instruct you not to bother removing the main board and trying to repair the thing!) Sprague electrolytic capacitors either cost an arm, leg and a kidney, or they're pure unobtainium, altho' there are PCB adapters made to enable standard 10 mm pitch two–pin capacitors to go in the PCB, the supply of them is hit–and–miss, I guarantee every eBay seller won't have any when you get another one of these to do! Tripler modules for the p.d.a. supply go s/c with monotonous regularity, involving much creativity in Araldite to repair and fill it afterwards, and everything, CRT included, has to come out to get at it! '468 uses a gruesome ADC made by TRW Automotive that gets extremely hot and smelly in operation and failures aren't exactly unknown either! Cam switches and attenuator modules notorious on these unless you're prepared to dismantle ALL the boards and cam–leaf operating assemblies and clean them METICULOUSLY as per the instructions in the manuals! Fans are daft brushless d.c. things in the 465/465B that jam or get very badly worn bearings and if you skip repairing them, all the transistors in the front–end'll start showing their displeasure by popping off one after the other! Innumerable tantalum failures as well! Oh yes, the early series 465B manual from Artek I got didn't meet their advertised quality standards, it was full of engineers scribbles and blotches all over the circuit diagrams – get one from QService instead! Chris Williams PS! (2024 Addendum !) . . .Trigger slope switch knob/Trigger Slope Level Knob and Controls :– . . .These are suddenly starting to get broken more often on sale units – both the knobs and the concentric control potentiometer/switch are EXTREMELY fragile! |
| coppercone2:
just a reminder if you are thinking about posting in this thread about a recent issue take a 2 week break :-DD |
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