Not necessarily. Besides, manufacturers themselves might not respond to used equipment past a certain point. Many of the best meters are no longer being made, but potentially still have a longer useful lifetime. Some might have they own contracted repair facility, some might not. It all depends.
Well, Konica Minolta handles only NON-photographic light meters.
Sekonic seems to have photographic meter service (with calibration adjustment). Information for those in the USA...
Service & Repairs
Sekonic products purchased from or distributed by MAC Group may be sent through your local dealer or directly to our national service headquarters or other authorized service center. International Shipping is not covered under warranty service.
Ship prepaid and insured to:
Sekonic Service Department
MAC Group
75 Virginia Road
North White Plains, NY 10603
Fax: 800-321-2205
And the web page has a Q&A section which reads...
Who should I ask for checkup and calibration?
Sekonic has authorized distributors in each country for checkup and calibration.
Please get in touch with a distributor in your country.
I found a calibration service, International Light Technologies, (978) 818-6180, whose website also specifically mentions brands inclusive of photographic meters, although non-photographic meters are made by these companies...
Avantes, Cooke, Daavlin, Delta OHM , Dymax, EIT, Excelitas, Exfos, Extech, Fluke, G&R Labs, Gigahertz-Optik, Greenlee, Gossen, Hamamatsu, Honle, Jelight, Konica Minolta, Lesco, Linshang, National Biological, OAI, Ocean Optics, Omega Engineering, Omnicure, Opsytec Dr. Grobel, Optimum, Sky Instruments, Solarmeter, Spectral Products, Sekonic, Spectroline, Spectronics, Sper Scientific, UDT, UV Power, UV Process Supply, Testo, UVX, Yokogawa, and more.