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Shopping. How long do (chinese) scopes last?

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mwb1100:

--- Quote from: CustomEngineerer on February 16, 2023, 10:20:24 pm ---
--- Quote from: mwb1100 on February 15, 2023, 11:40:39 pm ---> buy from Tequipment or Saelig and get the EEVblog discount

Tequiptment handles their free shipping with a coupon code - which won't stack with the EEVBlog code.  Saelig gives you the free shipping regardless (no code is needed to activate the free shipping).  So generally you'll save 20-30 bucks with Saelig.

--- End quote ---

I'm not sure where you are getting that. I ordered a new scope in late November of last year directly from tequipment and used the eevblog discount code and received the free shipping as well.

--- End quote ---

I tried to order an MSO5074 in September and I had to put in the "FREESHIP" coupon code to get free shipping. When I put in the EEVBlog code I got the EEVBlog discount, but the shipping was added back in.  I asked in email if they could get me both discounts and they said no, so I went to Saelig.

I don't have the emails anymore because my email client perma-deletes mails in the Trash folder after 30 days.  I tried the same thing today (but with an SDS1104X-E for whatever reason) and got the same behavior.

H713:

--- Quote from: argile_tile on February 15, 2023, 01:36:53 am ---I saw ALLOT of complaints on many ($200 $500 chinese scopes) on AMAZON.COM.  It's why I asked.

"failed after hours of use", "failed after days of use", "screen is corrupted on arrival", "failed just after 1 yr warrantee", and so on.  Complaints filed on many models even on EDU tek and keysight.

It's good to hear people who bought and used them believe they can last 8 years.  They have only a 1yr warrantee.  I can afford that, I really can't afford a flash in the pan, is all.

--- End quote ---


Just remember, this is a very competitive market, and unless something has changed, Amazon is terrible about policing fake reviews. Who's to say those weren't left by a competing manufacturer?


The scopes coming from the far east seem to be fine. Are they as reliable as a Keysight or a Tek? Of course not, but that's what you get for $500. As a guess, I'd expect 10 years of hobby use, or maybe 5 years of constant lab use.

Odds are the fault will be an encoder, PSU or display issue, and if you're so inclined, any of these is likely to be pretty fixable even without schematics. 

I believe my Siglent came with a 3-year warranty, but some of the other Chinese equipment I've bought is 1 year. The only stuff to offer better than than 3 years is pretty high-end and expensive.

ebastler:

--- Quote from: argile_tile on February 15, 2023, 12:58:07 am ---I'm unsure if I have money to set down $500 if I know the scope will fry itself in a 2 yr.  I'd be the $200 customer or even put off getting one if they are 2yr not 10yr builds.  (and the features are changing so quick: Hantek is on the move.)

--- End quote ---

I don't recall seeing any repair threads on this forum where users had to fix a broken Hantek, Owon, Siglent, or Rigol scope. Firmware hacking, modifications (e.g. encoder upgrades, quiet fans), sure -- but no repairs needed, it seems.

Personally I have had my DS1054Z for eight years now. Used it quite a bit, lugged it around in a suitcase quite a few times, and it is doing fine. Two of the original probes did fail though. That's just one data point, but the absence of repair threads suggests to me that these entry-level scopes are generally quite robust.

Mass production, optimized for good yield, probably helps. As long as the main board and power supply don't run hot (since the engineers skimped on cooling), I would not be too concerned about reliability.

Fungus:

--- Quote from: H713 on February 17, 2023, 06:24:35 am ---The scopes coming from the far east seem to be fine. Are they as reliable as a Keysight or a Tek? Of course not,

--- End quote ---

Evidence needed.

tautech:

--- Quote from: Fungus on February 17, 2023, 07:27:44 am ---
--- Quote from: H713 on February 17, 2023, 06:24:35 am ---The scopes coming from the far east seem to be fine. Are they as reliable as a Keysight or a Tek? Of course not,

--- End quote ---

Evidence needed.

--- End quote ---
Yep I picked up on that too Fungus.
It seems some seem to forget Rigol got its start making scopes for HPAK.
And lunch box Teks have been made in the east for decades.

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