Pantech PAN8022 dual channel scope - UK Vintage Radio Repair and Restoration Discussion Forum

RogerWalker · 6th Sep 2014, 10:08 pm

This is a medium-sized 2-channel transistor scope that claims to come from a division of Carlo Davazzi. I can find no trace of the product or manufacturer on the web, let alone a manual.
The trace is glued firmly to beyond the mid left hand side of the screen and apart from EHT, there seems to be no sign of life from timebase or Y amplifiers. I could really do with a manual or circuit - does anyone recognise the brand please?

We have completed our house move to deepest Powys and have enjoyed tropical weather and hardly any rain. The locals tell us to stick around - it will come . . . I take that to mean a circuit for the Pantech 8022?
Hope someone can assist. I can add photos if needed.
Kind regards
Roger

Herald1360 · 7th Sep 2014, 3:04 pm

I've heard of a Carlo Gavazzi- we had a clipon AC ammeter of that brand at work in the early '80s. No ideas otherwise though maybe try google.it ?

maninashed · 7th Sep 2014, 4:44 pm

Could be a badge engineered Wayne Kerr or similar, post a pic or two please Roger. First job as with all these - psu voltages. Once you are satisfied that all rails are functional and close to spec before venturing further. Check these and let us know what you find.
Bill

RogerWalker · 7th Sep 2014, 10:15 pm

Thanks T. Herald
I had already googled Davazzi and sent the Italian HQ site a request for info on the scope. In my experience, big companies don't usually bother to respond . . .

Do we have any Italian members who might recognise the marque maybe?

Kind regards
Roger

RogerWalker · 7th Sep 2014, 10:20 pm

Thanks Maninashed -not sure what the PSU Volts should be without a manual . .
I will have a look at WK models - any thoughts on a model?
Regards
Roger.

Herald1360 · 7th Sep 2014, 11:51 pm

It's Carlo Gavazzi not Davazzi. There is definitely info available to suggest that the Pantech (or Pantek) PAN 8022 was a product of theirs, though this doesn't help much with getting any useful info.....

http://www.radiomuseum.org/dsp_herst...ompany_id=9935

Interesting document:

RogerWalker · 8th Sep 2014, 11:18 am

Here's a photo - vaguely reminiscent of a Hameg? It has two input terminals bottom left that lead me to believe that it was intended for garage use as an ECU /analysis tool? This would tie in with Gavazzi's current activities.
Sorry but I couldn't open the .pdf attachment

Chaparal · 8th Sep 2014, 1:25 pm

This is a Meguro MO-1251 Oscilloscope 20 MHz.

IT's badged also as:
- Pantec PAN 8022
- Elenco MO-1251
- Brunelle 2988
maybe more

A Manual is avalible if you search for Elenco MO1251
or PM

Front panel with controls
Peter

RogerWalker · 8th Sep 2014, 2:37 pm

Wunderbar! Thanks very much for the ID Peter. I have already downloaded the manual - which is very comprehensive. At first glance it might be the Horizontal output chip causing the x-deflection problem. I will report back when I know.
Thanks all!
Regards
Roger

maninashed · 8th Sep 2014, 2:52 pm

Roger, check psu voltages first, there will probably be + and - rails, and one may be down causing that symptom.
Bill

RogerWalker · 8th Sep 2014, 7:02 pm

Thanks MIAS - we're having some building work done for the next few days so I won't be able to get to it until the weekend - now that I have the manual, it should be a relatively straightforward bit of troubleshooting. If I run into problems I know where there're a bunch of experts I can turn to. What a great resource this forum is!
Roger

6th Sep 2014, 10:08 pm	#1
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Pantech PAN8022 dual channel scope This is a medium-sized 2-channel transistor scope that claims to come from a division of Carlo Davazzi. I can find no trace of the product or manufacturer on the web, let alone a manual. The trace is glued firmly to beyond the mid left hand side of the screen and apart from EHT, there seems to be no sign of life from timebase or Y amplifiers. I could really do with a manual or circuit - does anyone recognise the brand please? We have completed our house move to deepest Powys and have enjoyed tropical weather and hardly any rain. The locals tell us to stick around - it will come . . . I take that to mean a circuit for the Pantech 8022? Hope someone can assist. I can add photos if needed. Kind regards Roger

7th Sep 2014, 3:04 pm	#2
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Pantech PAN8022 dual channel scope I've heard of a Carlo Gavazzi- we had a clipon AC ammeter of that brand at work in the early '80s. No ideas otherwise though maybe try google.it ? __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

7th Sep 2014, 4:44 pm	#3
maninashed Rest in Peace Join Date: May 2011 Location: Preston, Lancashire UK Posts: 955	Re: Pantech PAN8022 dual channel scope Could be a badge engineered Wayne Kerr or similar, post a pic or two please Roger. First job as with all these - psu voltages. Once you are satisfied that all rails are functional and close to spec before venturing further. Check these and let us know what you find. Bill

7th Sep 2014, 10:15 pm	#4
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Re: Pantech PAN8022 dual channel scope Thanks T. Herald I had already googled Davazzi and sent the Italian HQ site a request for info on the scope. In my experience, big companies don't usually bother to respond . . . Do we have any Italian members who might recognise the marque maybe? Kind regards Roger

7th Sep 2014, 10:20 pm	#5
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Re: Pantech PAN8022 dual channel scope Thanks Maninashed -not sure what the PSU Volts should be without a manual . . I will have a look at WK models - any thoughts on a model? Regards Roger.

8th Sep 2014, 11:18 am	#7
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Re: Pantech PAN8022 dual channel scope Here's a photo - vaguely reminiscent of a Hameg? It has two input terminals bottom left that lead me to believe that it was intended for garage use as an ECU /analysis tool? This would tie in with Gavazzi's current activities. Sorry but I couldn't open the .pdf attachment Attached Thumbnails

8th Sep 2014, 2:37 pm	#9
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Re: Pantech PAN8022 dual channel scope Wunderbar! Thanks very much for the ID Peter. I have already downloaded the manual - which is very comprehensive. At first glance it might be the Horizontal output chip causing the x-deflection problem. I will report back when I know. Thanks all! Regards Roger

8th Sep 2014, 2:52 pm	#10
maninashed Rest in Peace Join Date: May 2011 Location: Preston, Lancashire UK Posts: 955	Re: Pantech PAN8022 dual channel scope Roger, check psu voltages first, there will probably be + and - rails, and one may be down causing that symptom. Bill

8th Sep 2014, 7:02 pm	#11
RogerWalker Hexode Join Date: Sep 2005 Location: Powys, Mid-Wales, UK. Posts: 289	Re: Pantech PAN8022 dual channel scope Thanks MIAS - we're having some building work done for the next few days so I won't be able to get to it until the weekend - now that I have the manual, it should be a relatively straightforward bit of troubleshooting. If I run into problems I know where there're a bunch of experts I can turn to. What a great resource this forum is! Roger