I have an Hp 334A that powers on and appears to function partially but I’m not sure what all could be wrong with it. If anyone fixes these units at a reasonable price I would be interested in having it put back in top notch shape with a good calibration. I restore vintage hifi and I need to get it up and going as quickly as possible.?

I’d like to know if anyone out there can fix a somewhat working 334a and about what would it cost?

On 4/6/20 10:02 PM, Jared Cabot via groups.io wrote:

I just picked up a HP 3708A Noise and Interference Test Set for a good
price (1000 yen :) ) and it appears to have option 030 installed, but
this isn't listed in the manual.
I'm wondering if this could be a custom option of some sort? Does anyone
know how I can find out what this option is?

I don't see it in the big master list.

I remember seeing a big 'master list' of HP options somewhere recently,
but fort the life of me, I can't find it now. I was hoping to find the
info in there maybe.

File sent off-list.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Hi,

I just picked up a HP 3708A Noise and Interference Test Set for a good price (1000 yen :) ) and it appears to have option 030 installed, but this isn't listed in the manual.
I'm wondering if this could be a custom option of some sort? Does anyone know how I can find out what this option is?

I remember seeing a big 'master list' of HP options somewhere recently, but fort the life of me, I can't find it now. I was hoping to find the info in there maybe.

?

?

Thanks!

I have one of these meters, it took a small tumble. Now it needs a potentiometer and resistor and fix the cracked circuit board. Shame, it’s a really nice meter.?

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Just an FYI – if you are outside of the geographic area the seller has indicated they will ship to, eBay will block contact requests initiated through the links in the item listing. You need to go to the top-level screen and then contact the seller outside of the item listing.

?

I've contacted some sellers who have had options set wrong because ebay screwed with them when they were entering the listing and they didn't see the defaults moved.

Most change the listing for me.? (have so far had the sellers both willing to do so, and have ebay change the option).

Mostly for changing off "local pickup" which happened inadvertantly in both cases)

thanks
Jim

Regards,

?

Ken

?

From: [email protected] [mailto:[email protected]] On Behalf Of Paul Bicknell
Sent: April-06-20 12:31 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Ebay seller called m2wave

?

Hi? Dick

?

I take your point? that is exactly why I have posted this question to this group

If it turns out that nobody has dealt with him or hade bad experiences then perhaps we should know

?

Regards Paul

?

---

From: [email protected] [mailto:[email protected]] On Behalf Of Dick
Sent: 06 April 2020 17:11
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Ebay seller called m2wave

?

If the "Seller" has no time to deal with a "Buyer", is he really the type of vendor

you want to do business with ??

?

If it's difficult to communicate with him now, what will it be like if you need to

contact him after the sale.

?

Not my cup of Tea !!

?

73, Dick, W1KSZ

---

From: [email protected] <[email protected]> on behalf of Paul Bicknell <paul@...>
Sent: Monday, April 6, 2020 8:29 AM
To: [email protected] <[email protected]>
Subject: [HP-Agilent-Keysight-equipment] Ebay seller called m2wave

?

?

?

Hi All dues any one know? an Ebay seller called????

As he doesn’t allow contact and I am interested in an item he has for sale

?

Best Regards Paul?? located England

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The seller is legit, honest, knows RF and microwaves and has a good stock of items. I have known him for many years, and last saw him a month ago at at an electronics swap meet, where he has been selling for many years.
I have no idea why he is unresponsive, but I know how to contact him. Hopefully he is not ill, during this difficult time.

Stuart K6YAZ
Los Angeles, USA

unfortunately 9122C I don't have but? I think as long as?? webpage is working? I should be ok just it will be a pain to make all correction tests
Maybe someone here already makes some little soft for EEPROM back up using USB GPIB controller which will help a lot?
Anyway, after today's browsing I think??I found my answer.

I don't know specifically for that model, but your symptoms sure sound like a bad SRAM chip to me. Do you know if the self-test does a full test of the memory?

-Matthew

I agree with you Donald. I have been buying on eBay for many years and have had very good luck with test equipment. It has made a lot possible for me, without spending a fortune.

Stuart K6YAZ
Los Angeles, USA

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No virus found in this message.
Checked by AVG -
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.

Don't cut into the PCB unless you need to - make some careful leakage measurements first. I have seen plenty of blackened HP / Agilent PCBs that are still good insulators and work fine once the damaged components are replaced. The old brown phenolic PCBs that were used in tube-based HP gear from the 1960's and earlier (and are still used in some cheap consumer gear) would become very conductive when blackened, but the modern fiberglass (FR4 etc.) material is much more resistant to that effect.

-Matthew

Hi HP Experts,

the HP54603B is a mid-90s digital storage scope (compact and nice besides the
missing ?-metal shield for the CRT). Mine has the HP54657A Measurement/Storage
Module installed. Most of the time it works flawlessly BUT there are
reproduceable problems with trace memory functions:
- Storing screen data to memories 4 and up (nonvolatile) seem to work fine
? until the device is switched off
- On the next power up, the recall (or preview) of traces 4++ leads either to
? a completely messed up screen display or a hard system reset (with all
? memory data wiped out)
- Trace memories 1 to 3 are ok

So the questions are:
- Is this a known problem ?
- Is there a firmware update available for the scope and/or the storage module ?
- Does at least a workaround exist to avoid loss of memory data ?

The software version of the scope is V.1.2 and "Yes", I've done the power-on
reset (module initialization) several times with no effect. The selftest functions
pass without error messages.

Many thanks for advice, help or solutions

Regards (& 73 :-)??? Andreas DG7RBN

Matej, if you really want to do this as safely as possible you can back up the EEPROM using a 9122C external floppy disk drive (GPIB). I am pretty sure the 8753B/C supports that.

Vladan

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No virus found in this message.
Checked by AVG -
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.