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Re: White screen and no cursor at all
Posted: Sun Jun 09, 2019 12:09 pm
by Lardo Boffin
Papalapa wrote: ↑Sun Jun 09, 2019 11:39 am
Lardo Boffin wrote: ↑Sat Jun 08, 2019 8:58 pm
Once you adjust the ZX8-CCB you should get a really good picture.
For later ULAs I start with this position and then fine tune:-
35DC1118-6135-4F8E-B637-8CCB59040850.jpeg
Yellow lines added for clarity.
Before adjusting I always take a photo of the current position. Very useful when it gets worse.
R1 is totally turned to the right then?
This is the recommended position when do you start the adjust but later it seems that should be turned to the left. Anyway, if do you have a good video signal it doesn't matter..
Just checked my order history on Sell My Retro and it appears I have fitted 24 like this! I have not had to move R1 much from there on any of them.
Re: White screen and no cursor at all
Posted: Sun Jun 09, 2019 7:16 pm
by 1024MAK
Lardo Boffin wrote: ↑Sun Jun 09, 2019 12:09 pm
Just checked my order history on Sell My Retro and it appears I have fitted 24 like this! I have not had to move R1 much from there on any of them.
I believe PokeMon sets them up for one ULA type before sending them out...
So you should only need to adjust them slightly if using the same ULA type.
24
No wonder he does not think I am his favourite customer anymore!
We’ll have to call you the Del Boy of the Zeddy world at this rate
Mark
Re: White screen and no cursor at all
Posted: Sun Jun 09, 2019 9:04 pm
by Lardo Boffin
1024MAK wrote: ↑Sun Jun 09, 2019 7:16 pm
Lardo Boffin wrote: ↑Sun Jun 09, 2019 12:09 pm
Just checked my order history on Sell My Retro and it appears I have fitted 24 like this! I have not had to move R1 much from there on any of them.
I believe PokeMon sets them up for one ULA type before sending them out...
So you should only need to adjust them slightly if using the same ULA type.
24
No wonder he does not think I am his favourite customer anymore!
We’ll have to call you the Del Boy of the Zeddy world at this rate
Mark
I believe they are set up for the earlier ULAs. I tend to keep / not refurb those. They stay in the back of the three wheeler.
Re: White screen and no cursor at all
Posted: Mon Jun 10, 2019 8:45 am
by Papalapa
1024MAK wrote: ↑Sun Jun 09, 2019 7:16 pm
Lardo Boffin wrote: ↑Sun Jun 09, 2019 12:09 pm
Just checked my order history on Sell My Retro and it appears I have fitted 24 like this! I have not had to move R1 much from there on any of them.
I believe PokeMon sets them up for one ULA type before sending them out...
So you should only need to adjust them slightly if using the same ULA type.
24
No wonder he does not think I am his favourite customer anymore!
We’ll have to call you the Del Boy of the Zeddy world at this rate
Mark
That's right, he adjust the circuits for the 184 ULA by defect, but I have had this one on my ZX81 and even so the first startup was the screen completely white. After playing with the resistors I get a very good image of course.
Re: White screen and no cursor at all
Posted: Thu Jun 13, 2019 9:32 am
by Papalapa
Well, finally I get an original C210 ULA for the second Zeddy and once installed is perfectly working.
Now is time to play with the TZXduino and the old software
Re: White screen and no cursor at all
Posted: Thu Jun 13, 2019 9:41 am
by mrtinb
Great!
Re: White screen and no cursor at all
Posted: Thu Jun 13, 2019 12:37 pm
by 1024MAK
Mark
Re: White screen and no cursor at all
Posted: Thu Jun 13, 2019 12:43 pm
by Moggy
Now your journey begins!
Re: White screen and no cursor at all
Posted: Thu Jun 13, 2019 4:48 pm
by Lardo Boffin
Excellent news!