|
|
Post by koldby on Jul 9, 2015 7:20:25 GMT -5
I have this thread over at another forum but new rules, and new changes to the previously unmoderated OT form ( where I post a lot) has me afraid that one day I will be be banned from that forum. So I am going to attempt to move as much of that thread here. Not sure how it will go, But I will give it a shot. EDIT: Some pics are missing, they will be added later. Very good move , nashou!  I just discovered this forum and already I love it. Great informations a very knowlagable moderator (CLM repair for nashou) and a lot of the good people from the other forum... Koldby |
|
|
|
Post by mastertech on Jul 9, 2015 9:40:39 GMT -5
Welcome koldby. Glad to see you here.  |
|
|
|
Post by koldby on Jul 10, 2015 5:45:28 GMT -5
Hi Nashou Here are some pictures from the latest HVPS from VDC. Apparently they do not use carbon composite resistors anymore. So the only upgrade I should make is the addition of the extra capacitance to the 390V line? Koldby      |
|
|
|
Post by koldby on Jul 10, 2015 6:11:11 GMT -5
Nashou
Shouldn´t you mention that the 270uH inductors used in the Focus board mod. actually should be 27uH high current types?
Koldby
|
|
nashou
Unmoderated Off Topic
Tech in Training.....
Posts: 1,239 
|
Post by nashou on Jul 10, 2015 7:37:47 GMT -5
Nashou Shouldn´t you mention that the 270uH inductors used in the Focus board mod. actually should be 27uH high current types? Koldby Yes they should be 27uH. |
|
|
|
Post by mastertech on Aug 17, 2015 10:06:59 GMT -5
Its my experience that it you can get the same results just changing between standard boards. I have 3 TAN machines and the last i tested from a TAN had terrible drift, and none of them have replaced caps, so my guess is that you have a TAN where someone else changed the caps. Or it is also possible that TAN machines went through many different versions of modifications just like any other modifiers changes have. As time goes by more things are addressed for the versions change. |
|
|
|
Post by stridsvognen on Aug 17, 2015 10:31:11 GMT -5
Its my experience that it you can get the same results just changing between standard boards. I have 3 TAN machines and the last i tested from a TAN had terrible drift, and none of them have replaced caps, so my guess is that you have a TAN where someone else changed the caps. Or it is also possible that TAN machines went through many different versions of modifications just like any other modifiers changes have. As time goes by more things are addressed for the versions change. Its possible, it would still be interesting to know if the replaced cap was defect, and as i posted, the results is identical to the results i had just changing around standard boards. Would be interesting to know the build year of that TAN machine used, the only difference from a standard Marquee on all my 3 TAN machines is the black box on the FGM, so i wonder if tan did mods at all or just fitted the machines for a specific purpose. What part of the HDM do you think make the red image drift different than green and blue who is related to the 2 caps.? |
|
|
|
Post by mastertech on Aug 17, 2015 11:32:49 GMT -5
Or it is also possible that TAN machines went through many different versions of modifications just like any other modifiers changes have. As time goes by more things are addressed for the versions change. Its possible, it would still be interesting to know if the replaced cap was defect, and as i posted, the results is identical to the results i had just changing around standard boards. Well if in fact it is the caps causing the drift then it would only make sense that different stock boards would have different results. The caps of the different boards could have different levels of degradation.Would be interesting to know the build year of that TAN machine used, the only difference from a standard Marquee on all my 3 TAN machines is the black box on the FGM, so i wonder if tan did mods at all or just fitted the machines for a specific purpose. The build year of the machine would be not relevant since there would be no way of knowing if any of the boards are original or from that same machine or not.What part of the HDM do you think make the red image drift different than green and blue who is related to the 2 caps.? |
|
|
|
Post by stridsvognen on Aug 17, 2015 13:33:30 GMT -5
This looks like the latest HDM i can find, my guess is its just a few years old, REV.11, and i did not have luck finding 2 identical HDM boards yet, out of the 11 i have here  |
|
|
|
Post by mastertech on Aug 17, 2015 14:37:54 GMT -5
This looks like the latest HDM i can find, my guess is its just a few years old, REV.11, and i did not have luck finding 2 identical HDM boards yet, out of the 11 i have here I'm not sure I get the relevance of your posts. Along with the fact that this picture is the same as 1 of your 4 pics above. Sure, there will always be different versions and different batches. This goes with "ALL" electronics. What is it you are trying to say? |
|
|
|
Post by stridsvognen on Aug 17, 2015 16:55:09 GMT -5
Just found a HDM where C43 is a 385V 85C its a high hour board, around 60000 Hours. Its heating up right now.
|
|
|
|
Post by stridsvognen on Aug 17, 2015 17:26:59 GMT -5
While we are on this topic can someone explain to me why there is geometry electronics on the focusboard? I mean the board only connects to the focus coils. My guess is that it operates true the motherboard. |
|
|
|
Post by mastertech on Aug 17, 2015 20:28:25 GMT -5
My guess is the board had room.
|
|
|
|
Post by mastertech on Aug 17, 2015 21:13:30 GMT -5
Was the red drift size or shift?
|
|
|
|
Post by mastertech on Aug 17, 2015 21:24:22 GMT -5
Was the red drift size or shift? Shift. Interesting. Cause in Strids pic his appears to be size. So not the same issue. |
|
