Ok since there is not service manual or schematics known for this baby, and I wanted to check pin out etc. anyway, I started documenting the entire harness and parts.
What I noticed in the process is that the transformer get pretty damn hot. Now....seeing it's a transformer brand/kind also used in Zaccaria cabs and remembering some very heft fans on Zaccaria cabs I wonder......
Is it normal for these transformers to get so hot ? Must say I never really tried to feel the temperature of a regular Atari Power Brick but it seems like this one is working on the edge of it's capacity.
Following this, I found out the primary lugs configuration and comparing it with the drawing of the Zaccaria I was confident enough to move the mains input to the higher rated input (245VAC ?).
Although the mains voltage in my house was about 227VAC at that moment, the output voltages were all pretty much on the high side of what they were specced.
So, to ease the heat a bit I moved the mains and it works fine. Output voltages are now at or a bit under spec but everything seems to work happily (don't think it will fix the random vector/reset issue though).
Next I decided to get the monitor out to clean the monitor area of the cab and of course the monitor too.
I was a bit in doubt, but I decided to wash the chassis PCBs like I do normally, with some detergent and in an nice bath of luke warm water
of course dried it right after the bath with the wife's hairdryer !!!
The CRT I cleaned with glassex (bootleg version) and some paper towel/magic sponge.
The dust just _kept_ coming off....but it started to look better and better. The aquadag on this tube turns out to be very sturdy, not a sign of it getting loose. I measured it after the cleaning and got the expected results (within the kOhms is normal, depending on the distance between your test leads).
Pics follow later.
I checked all caps and all of them are indicating OK. However they are brands I never heard of and they do look original. They all are 85 degr. Types and since I was having some linearity issues I deciede to go for a full cap kit, except for the big filter caps. The linearity could well be only an issue of setting up,the pots too, but anyway...
I reassembled everything to see if the wash hands harm anything and sure enough the picture came up happily as before
More about the Hantarex MTRV when I post pics...
In the process of checking stuff I noticed that the big filter cab on the HV PCB had a VERY loose soldering on one pin !!! This shows that you need to check stuff, even if it seems to work OK. Not sure if I was just lucky that the cap made physical comtact or that it simply worked without filtering but I fixed it of course.
Still need to order some caps, could only find three correct values in my parts.
