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some dutch tricks , i think the uk people can translate it in good englisch use double IC 28 pins socket. buy or get a good ic 28 pins socket , with good legs not the chinees 0.05 pence things :) many someone in uk can put a picture which i mean ? so you have a good empty 28 pins socket, put your ro...

look for item on this forum bbc PSU, was the psu not the same as bbc ? is the problem still short circuit or is the light still on if you turn the psu on ? the problem is maybe the flyback circuit. if the psu is allmost the same as bbc psu read the item about bbc psu it can be a lot of small things ...

use m3 , like the pc scews

allso do this
with
uhf out on tv

mode 7

vdu 130 return
text

vdu132 return
text

your pictures are in colour but

what happens with

vdu129 in mode 7
then text ?

richmond62 wrote: ↑

Sun Jun 10, 2018 6:33 pm

is your monitor a colour monitor ?

Look at my photographs before you ask me questions like that.

is your monitor a colour monitor ?

try mode 7
vdu 129 return
type text
vdu 130 return
type text

enz,enz

richmond62 wrote: ↑

Sun Jun 10, 2018 6:15 pm

I was just running MODE 5 as a rough guide.

white is all the colours RGB together

try mode 2 for colour

or in mode 7

vdu129, or vdu130,131,132,133 enz

if colours are not the right one maybe reverse colours ?
or burst is not good

quick look at schematic. i have no time left tonight but

check s39 ? someone can quick look what that is ?

Csync not good at modulator

Burst gate not good at modulator

modulator broken

you can simple test this , but if no englishman can tell you

the dutchman can tommorrow

your modulator from your bbc can be broken , or your sync is gone :), i have to look at the schematic #-o if you want to solve it you must open your bbc and know what you are doing :shock: do you have a multimeter , i shall not ask about the scoop anymore [-X , with scoop you can find your sync , ht...

oke in simple englisch please :) what is the problem ? if you turn on your bbc , connecting uhf out to tv arial in you get picture ? if you turn on your bbc , connecting video out to tv video in with yellow cable and convertor to scart tv in no picture ? if you turn your master on , no picture on tv...

i have allso not must time for the bbc ...... pin 12 with jumper on piep , jumper off no piep :) i will puzzle sometime some more :) still wonder ? use multimeter. on 74ls682 pin 10 black red on pin 12 , piep ? red on 14 piep ? red on 16 piep ? red on 18 piep ? Sorry for the late reply... pin 10 bla...

how works electron with roms ?
where is adfs rom and pres plus 1 rom ?
not on MB board ?

i think the sideway 6264 has a conflict with these roms.
maybe the board was before they install the adfs rom and/or plus1 rom ?

maybe leave the switch in up or down position ? then ctrl break ? the problem is i don't have an electron by hand there are wires connected with lk8 ( OE ?) wires at 6264 pin 27 i can't see well and white wires further away by 6502a chip i think the adress by 74ls682 is &3000 above but i will more i...

still wonder ?

use multimeter.

on 74ls682

pin 10 black
red on pin 12 , piep ?
red on 14 piep ?
red on 16 piep ?
red on 18 piep ?

try this : switch up *load exmon &2000 , then switch down , ctrl break .... do you have exmon rom ? switch down *load exmon &2000, then switch up , ctrl break ...... do you have exmon rom ? switch up *load exmon &3000, then switch down , crtrl break ..... do you have exmon rom ? switch down *load ex...

oke i am allmost there. but need better picture underside. it is ram :) ,duh i think the switch up , black=gnd connected to white wire no adress selection needed switch down ,white connected to white need a adress above .... i have a problem i think the red thing is a jumper connecting q4 of sn74ls6...

i think if the PCB board is gone. by fire . all other thinks are fixable. allmost every chip is to buy
but if there are no tracks left you have a problem. new board oke , but still the old board is gone then

why do people throw away thing ?

open your electron , maybe there is a BUG inside

picture 4 underside board better please , by chip 74ls682

please take board flat no angle pictures

DutchAcorn wrote: ↑

Tue May 29, 2018 6:33 pm

Ok, here goes!

someone did like white spaghetti

maak eens een goede photo van het alles :) , ook de draden erbij. puzzelen we mee (take better pictures,also the wires) How much ram is there? If there is 8k could it be a version of the turbo board? I think there's 16K. Two times HM6264. My thoughts on this are there is a clash between the ram and ...

do the laury / yanny test
if you hear laury you are old , if you hear yanny you hear tv's, microwaves, things for dogs /
and a lot of devices

i think you have to look at pc software :) on the smart-spi make ssd , you can maybe alter the smart-spi rom so that after it test sd card with cmd0 you get answer cmd0 give responce ??? but there are sd card without spi mode , and if no spi mode it will never work on bbc :( Did you use the SD card ...

i don't think that will help ? the card must responce to calls , if wrong format . it gives an other error
was it not wrong format or so

DutchAcorn wrote:Did you use the SD card formatter to format them? Modern versions of windows are known to have issues with formatting SD cards?

aliexpress ? maybe there is a pc software program that can read more factory data off the micro sd card ?

There are two bus protocols defined for SD Cards. The default mode is native SD mode but the card can be configured to use a slower SPI mode. Protocol selection is done during the first reset command after power up. The SD Card powers up in SD mode. To switch the card to SPI mode, the CS signal must...

which cards , brand and other marks ? there are some sd cards that don't have the SPI protocol only the other protocol ( more lines, don't know the name so) that's why the will work with PC because the pc can work with the two protocols bbc (our mmc/mmb card reader ) works only under SPI proctocol a...

i uploaded my beeb.mmb a few times by now.
it has not change that much in time because
i don't play games.
and i think most not running games are fixed
for the beeb !!