Author Topic: Advantest R6581 Display Needed  (Read 1990 times)

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Offline TheDefpomTopic starter

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Advantest R6581 Display Needed
« on: September 23, 2022, 03:25:05 am »
Hi All,
I have been working on a Advantest R6581 8.5 digit (ish) multimeter which seems to be basically working (and yes I have been doing a video about it), but as usual with this type of gear the display is very dim, I am hoping someone out there has a known good display (with very little/no burn in) so that I can get this looking a lot better.

If you have one it will be shipping to New Zealand and payment will be done via PayPal.
Cheers Scott

Check out my Electronics Repair, Mailbag, or Review Videos at https://www.youtube.com/TheDefpom
 

Offline coromonadalix

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Re: Advantest R6581 Display Needed
« Reply #1 on: September 23, 2022, 01:37:53 pm »
do you have a part number / model,    since its an 2 line vfd  would it be substituable with an lcd instead ???

 

Offline picburner

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Re: Advantest R6581 Display Needed
« Reply #2 on: September 24, 2022, 04:16:29 am »
Quote
since its an 2 line vfd  would it be substituable with an lcd instead

No, a simple two-line character display is not enough, you need a graphic display.
In fact, as you can see from the attached picture, there are also symbols at the top of the screen.
Then you should do a decoding as I did some time ago for the Wavetek 1271.
I also have an R6581T with a barely readable display, I confess that for a moment I thought about doing a similar thing but then I gave up.
 

Offline aronake

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Re: Advantest R6581 Display Needed
« Reply #3 on: May 03, 2023, 11:00:38 am »
Have anyone had any success in finding a display or some alternative solution?
 

Offline TheDefpomTopic starter

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Re: Advantest R6581 Display Needed
« Reply #4 on: May 03, 2023, 11:10:48 am »
Not yet, I got mine brighter but it still is in desperate need of replacement
Cheers Scott

Check out my Electronics Repair, Mailbag, or Review Videos at https://www.youtube.com/TheDefpom
 

Offline aronake

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Re: Advantest R6581 Display Needed
« Reply #5 on: May 04, 2023, 04:48:57 am »
Not yet, I got mine brighter but it still is in desperate need of replacement

Thanks. I saw your video while searching for this. Good work both on video production and repair work!

Good there is the LCD display hack in case anything else fails.
 

Offline aronake

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Re: Advantest R6581 Display Needed
« Reply #6 on: May 04, 2023, 04:48:04 pm »
I'll be in Akihabara next week, so will search around. If any place to find one of these displays, that should be a good place.
 

Offline branadic

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Re: Advantest R6581 Display Needed
« Reply #7 on: May 04, 2023, 08:14:48 pm »
I was one of the lucky guys getting a new VFD back in 2020 for my unit.

https://www.eevblog.com/forum/metrology/advantest-r6581-8-5-digit-dmm-mini-teardownrepair/msg3245622/#msg3245622

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Offline aronake

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Re: Advantest R6581 Display Needed
« Reply #8 on: May 06, 2023, 05:25:06 am »
Kind of a odd that these ancient displays was manufactured as late as 2017.
 


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