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Date
Re: HP 54720A PSU fault
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
By medasaro · #104606 ·
HP54603B Software Gremlins
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
By DG7RBN · #104605 ·
Re: Optiion upgrade HP 8753C/B
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
By pianovt · #104604 ·
Re: Ebay seller called m2wave
Exactly my thoughts, Dick!? You hit the nail squarely on the head.Jim Ford?Sent from my Verizon, Samsung Galaxy smartphone
By Jim Ford · #104603 ·
Re: Ebay seller called m2wave
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
By Ken Nener · #104602 ·
Re: Ebay seller called m2wave
Hi Paul! I have dealt with him, he is a good guy. Dont know why you cannot message him from the item? People do change, but we have bought from each other for 20 years, no problems. BTW found a
By Jeff Kruth · #104601 ·
Re: 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
By Paul Bicknell · #104600 ·
Re: 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
By Dick <w1ksz@...> · #104599 ·
Ebay seller called m2wave
Hi All dues any one know an Ebay seller called <https://www.ebay.com/usr/m2wave?_trksid=p2047675.l2559> m2wave As he doesn't allow contact and I am interested in an item he has for sale
By Paul Bicknell · #104598 ·
Re: HP 54720A PSU fault
https://photos.app.goo.gl/Ri8ZFADuCvNYiKdj9 Given I don't have a schematic for the PSU it would be a bit hard to work out what the components are and what their values are. Luckily I found a chap on
By Dave_G0WBX · #104597 ·
Re: Optiion upgrade HP 8753C/B
as Ceasar said, this is a too dangerous way at least for me as you can see I am afraid to even entering keywords. And after your receiver upgrade?up to 6GHz you are using 85046a or 85047a test
By MatejBA · #104596 ·
Re: First Gen HP 54810A with dead HD, Got ISO 3.5, Any way to write it to a drive?
i downloaded the step by step.? That looks like a great writeup!? I will let you know what I find out. Ulf
By Ulf Jonsson · #104595 ·
Re: WTB : 1826 - 0372 Input Limiter Chip
Thankyou Matthew. I thought to myself : " I`ll never get one on eBay", but , again, eBay is my friend. There are actually several suppliers - some reasonable, some greedy. The Virus has caused the
By donald collie · #104594 ·
Re: First Gen HP 54810A with dead HD, Got ISO 3.5, Any way to write it to a drive?
I cant be 100% sure but it is not booting up and when I took the drive out I could at first not read anything from is using a USB-IDE adapter. After some gentle tapping I got it to spin up once and I
By Ulf Jonsson · #104593 ·
Re: Optiion upgrade HP 8753C/B
He already has the option keywords and does not need to (manually) program the eeproms.? He just wants the procedure to enter the codes.? Manually reprogramming the eeproms is too dangerous and/or
By Caesar Valenti · #104592 ·
Re: HP 54720A PSU fault
Hi Matthew, Nice story... its amazing what some people will do to "improve" the operation of various things. On a side note I'm also repairing a Wavetek sig gen where ALL the 100uF35v electros have
By Tim Tuck · #104591 ·
Re: HP 54720A PSU fault
LOL typo :) TT
By Tim Tuck · #104590 ·
Re: HP 54720A PSU fault
I am glad you have a new PSU on the way and plan the fix the existing one. Sounds like a good strategy all around. One of the strangest "smoked PSU" problems I ever encountered was in a really nice
By medasaro · #104589 ·
Re: HP 54720A PSU fault
We'll, you did post to the entire group, Doug.? FYI.Dissemble, BTW, means to hide one's real feelings or intentions.? As opposed to Disassemble, meaning to take apart.Jim Ford?Sent from my Verizon,
By Jim Ford · #104588 ·
Re: HP 54720A PSU fault
FYI dissemble does not mean disassemble. You should look it up. (I'm not posting this to the list.) --doug
By doug · #104587 ·