Huntron Users Support Forum

Huntron User Support Forums => Out of Production Hardware => Topic started by: gulfway on December 16, 2021, 04:51:51 PM

Title: Protrack I K45 Relay
Post by: gulfway on December 16, 2021, 04:51:51 PM
Hello

Can anyone tell me where the K45 relay is located on the main Board , I have located the other three any help would be great.

Thanks

Gulfway
Title: Re: Protrack I K45 Relay
Post by: fetron on December 17, 2021, 04:55:51 AM
serial number KJ3 version: Starting around the front "A" channel corner: 
K33 relay (channel A is short to channel B),
K34 relay (channel A is short to GND),
K35 relay (channel A input relay - front banana socket),
K45 relay (channel B input relay - front banana socket),
K36 relay (channel B is short to GND).
K37 relay (channel A Low/High range)
K38 relay (channel B Low/High range)

They are located under the CRT.


serial number KJ2 version: Starting around the front "A" channel corner: 
K33 relay (channel A is short to channel B),
K34 relay (channel A is short to GND)
K35 relay (channel A and channel B input relay - front banana socket) (double pole single throw contact)
K36 relay (channel B is short to GND)

K37 relay (channel A Low/High range)
K38 relay (channel B Low/High range)
K45 relay not included

They are located under the CRT.
Title: Re: Protrack I K45 Relay
Post by: gulfway on December 17, 2021, 07:39:21 AM
fetron

Thank You , looks as I need to get my eyes checked

gulfway
Title: Re: Protrack I K45 Relay
Post by: gulfway on December 22, 2021, 01:33:54 PM
I have replaced all of the relays , listed in the report and still getting the same error.
Any thoughts ?

Have enclosed the complete report file.
Title: Re: Protrack I K45 Relay
Post by: fetron on December 22, 2021, 11:10:37 PM
Try reprogramming the Flash Prom on the ProTrack.

Does it work well when used in desktop mode (without a workstation)?
Title: Re: Protrack I K45 Relay
Post by: gulfway on December 27, 2021, 08:42:14 PM
I have reprogrammed the unit , still no luck .
The unit in stand alone mode display this as pictured .
Title: Re: Protrack I K45 Relay
Post by: fetron on December 27, 2021, 11:17:49 PM

Test procedure Protrack:

http://www.huntron.com/privatesales/technical/063090tp.pdf
Title: Re: Protrack I K45 Relay
Post by: admin on December 29, 2021, 09:34:00 AM
Check the range resistors on the ProTrack input circuitry. Damage to these is the common problem we see.
Thanks.
Admin
Title: Re: Protrack I K45 Relay
Post by: jvthorsley on January 27, 2022, 04:17:55 PM
I believe the Relays here under the CRT can cause some strange problems on an old ProTrack as shown on attached photo.
An update on the fault would be interesting.
Title: Re: Protrack I K45 Relay
Post by: gulfway on February 28, 2022, 01:35:46 PM
I have checked all of the range resistors they are OK.
fetron pointed out a document that helped me isolate the problem to a (cdi 215D5FS) dc to dc convertor U49 that did not pass any voltage to the regulator.

Are there any current model dc convertors ? this part number is very old I may have to buy from overseas at a very high price.

Thanks fetron for the help

gulfway

Title: Re: Protrack I K45 Relay
Post by: fetron on March 01, 2022, 02:22:59 AM
The original dc-dc converter pinout:
(1) +5V input, (2) -15V output, (3) output common, (4,5,6,7,8) blank, (9) not connected,
(10) output common, (11) +15V output, (12) input common

The new dc-dc converter:
A conversion board is required due to the terminal deviation.
https://www.digikey.com/en/products/detail/recom-power/RS-0515D/2321270
Title: Re: Protrack I K45 Relay
Post by: admin on March 01, 2022, 06:58:09 AM
Thanks for the input, fetron. That part looks like a better solution than the original!
Title: Re: Protrack I K45 Relay
Post by: gulfway on March 02, 2022, 01:41:14 PM
Thank you fetron for the help, I will order today.