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Re: Arek's TF534 build
Posted: 13 Sep 2019 17:33
by 8 Bit Dreams
4-layer lis a bit different to 2-layer boards, middle layers do obsorb much heat
As said - use preheater to avoid lifting pads,
If you do it right you don't need high temperatures, board is heated from bottom and removing such komponents like cpld is a pice of cake...
Re: Arek's TF534 build
Posted: 13 Sep 2019 17:59
by arkadiusz.makarenko
8 Bit Dreams wrote: 13 Sep 2019 17:33
4-layer lis a bit different to 2-layer boards, middle layers do obsorb much heat
As said - use preheater to avoid lifting pads,
If you do it right you don't need high temperatures, board is heated from bottom and removing sych komponents like cpld is a pice of cake...
Preheater is on my list things to buy. :)
Re: Arek's TF534 build
Posted: 14 Sep 2019 02:57
by Maximilian
8 Bit Dreams wrote: 13 Sep 2019 17:33
use preheater to avoid lifting pads
What kind of preheater are you using?
Re: Arek's TF534 build
Posted: 14 Sep 2019 03:26
by 8 Bit Dreams
Re: Arek's TF534 build
Posted: 14 Sep 2019 20:22
by arkadiusz.makarenko
I started working on board nr 2.
Should I install R2 ? I did find a note on schematics note about some resistor, and now I am confused a little.
Re: Arek's TF534 build
Posted: 15 Sep 2019 07:22
by 8 Bit Dreams
All resistors and caps should be installed
Re: Arek's TF534 build
Posted: 15 Sep 2019 09:18
by terriblefire
Maximilian wrote: 14 Sep 2019 02:57
8 Bit Dreams wrote: 13 Sep 2019 17:33
use preheater to avoid lifting pads
What kind of preheater are you using?
My soldering iron is decent enough. I do need to put the temp up to to the ground pins i guess.
Re: Arek's TF534 build
Posted: 17 Sep 2019 13:29
by arkadiusz.makarenko
I completed build of second board, and I get EXACTLY the same output garbadge on serial output. This makes me think that I mostl likekly have bad CPU.
I have not installed RAM yet, but this shoudn't matter ? I still should see clear Diagrom output.
Re: Arek's TF534 build
Posted: 17 Sep 2019 14:28
by LADmachining
Have you checked that your serial link is working correctly using a standard board (e.g A500 with 68000) fitted with DiagROM?
Re: Arek's TF534 build
Posted: 17 Sep 2019 14:57
by arkadiusz.makarenko
Yup. Works all right on orginal CPU.