Hi 'J' , I purchased a TDS420A in a non-working state and was surprised to discover that it had been repaired not long before I got it as all the 'bad' caps had been replaced or maybe a much later pro

Hi , perhaps I should consider that but I already have several Tek C1001/2 cameras along with Cortex frame grabber cards so it seems a bit un-necessary although it might be a little more convenient as

Hi , I wish they had some value or use now that Polaroid film is not made in that size any longer - I have been in touch long ago with the current manufacturers of the Polaroid film , they didnt get t

Hi , I would be interested in a set for my TDS744 -- original version of scope . Thanks in advance . Brian (UK)

Hi Jared , thank you for your response . I have tried looking for any posts from anyone that has actually done it for a very early TDS744 . Mine seems to be late in the production or has been hardware

Woops , I forgot to say -- its a TDS744 Brian (UK)

Hi everyone , I often see posts where people are upgrading the s/w for TDS scopes but always the A,B,C or D versions . Mine is an original version ie. not ABC or D version is it possible to upgrade th

Hi Benedikt , I had the same problem for a number of years with the input amp being intermittent , when I finally got time to fix it I could not find a source for the 0216 chip , in desperation I robb

Hi Chris , I had that effect on one of my 7104's some tears ago , if I remember correctly there is a preset focus control - maybe focus range control near the rear right-hand side if you take the cove

Hi Tom , I have a system and would be interested in spare cards/parts . Where are you located , I'm in the UK so post could be a real problem cost wise . regardsBrian (UK)

Hi Eric , I think I must have been thinking of something like the 556 - HV supply for each gun . I was thinking this would have been very similar but very apparently not . I wish you luck with this ma

Hi Eric , I dont have a 565 myself mores the pity but I think the situation is a little worse than that -- if memory serves me correctly that scope has 2 HV transformers that are failing in the usual

Stephen , I'll be watching tomorrow , its easy for me -- I'm retired lol . Brian (UK)

Stephen , the Flood Gun connectors are often neck pins or metallic patches on the CRT Bulb and maybe on leads coming out of the shield rather than the CRT base socket . I may be wrong with this scope

Hi Stephen , I have been following most of this thread and at this point I think a warning might be appropriate . The CRT FLOOD GUN heater is likely to be across the -15v supply as its normally powere

Hi Albert , Thank you for adding your info on this . I have seen that effect as I change the vertical gain switch . The readout though is added to Beam 2 (twin gun CRT) so its probably R2749 and R2764

Hi Barry , thank you for the reply . I had heard / seen it mentioned that it was LF compensation being way off causing this but like you I hesitate to just blindly adjust a pot and see if it makes a d

Hi Barry , I have been watching these postings with interest . One of my 7844's has this or a remarkably similar problem . There is the wavy / jumping about readout but in my case it is made worse by

Hi Tim , I had that with a Chinese component analyzer with some 2N1516 and it was Tin wiskers . Once removed with a 15v psu it tested ok . Brian (UK)