TF536 buffers

[Hsommer]

Yes, I tried several times to check for continuity(and shorts), between the IC footprints and the RN's footprints, everything looks fine...

Also you checked IC6 to the IDE port ?

Yes I did, but it would be more easy, If I had a diagram, but nobody seems to have it???

[alenppc]

IC NOT from the BOM: Mouser Part no. 771-HCT245PW118 not working as IC6.

I didn't build this card, maybe a firmware problem? Or fault in the PCB?

I use HCT on all of my 536s without issues, so I don't know why they don't seem to be working for you. Could it be a matter of a CF card adapter? Are you using a V.H2 version? The V.B4 version won't work with the 536 unless you desolder the extra transistors.

[exxos]

Yes I did, but it would be more easy, If I had a diagram, but nobody seems to have it???

Only the gerbers have been released. viewtopic.php?p=75889#p75889 So you can see where tracks go easy enough. Nobody has the schematic other than myself AFAIK, and I am under licence not to release it or any other TF536 project files.

[go0se]

Also check that Pin 19 is connected to GND and Pin 20 is connected to +5V. Easiest to measure from the PWR2 header below the regulator.

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[terriblefire]

Also you checked IC6 to the IDE port ?

Yes I did, but it would be more easy, If I had a diagram, but nobody seems to have it???

I've no plans to release the schematics. But why not try each IC in turn to see if its any one set of pads?

The thing should work in a mix and match mode.

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[dabone]

I tried the same thing last night on mine and got no ide until I went back to the resistor networks also.

I got my latest tf536 from Amigastore.eu, where did yours come from?

[Hsommer]

IC NOT from the BOM: Mouser Part no. 771-HCT245PW118 not working as IC6.

I didn't build this card, maybe a firmware problem? Or fault in the PCB?

I use HCT on all of my 536s without issues, so I don't know why they don't seem to be working for you. Could it be a matter of a CF card adapter? Are you using a V.H2 version? The V.B4 version won't work with the 536 unless you desolder the extra transistors.

I am using the V.B1 CF card adapter, it works fine with the TF536 without the buffers.
Would there be a problem with this CF adapter with buffers?

[terriblefire]

I only use V.H2. Did you try changing the buffers one at a time.

[Hsommer]

Also check that Pin 19 is connected to GND and Pin 20 is connected to +5V. Easiest to measure from the PWR2 header below the regulator.



Screenshot from 2022-12-22 13-43-36.resized.pngScreenshot from 2022-12-22 13-44-02.resized.pngScreenshot from 2022-12-22 13-44-23.resized.png

I checked IC6; VCC is at pin20 , gnd at pin10, gnd at pin19, dir at pin1(connected to pin1 IC4 + IC5.

My board is revision 2, it does not correspond to the footprint of the first photo, but correspond to the connections at the diagram of IC6...

download/file.php?mode=view&id=29366


download/file.php?mode=view&id=29364

The unused buffer A0 - B0 is connected differently...

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IC6.jpg (98.04 KiB) Viewed 2741 times

[terriblefire]

Is your board 2 or 2b? Plain rev2 will not work with buffers but i've no idea how you got it if you did. There was only 10-20 of them made.