PROBLEMS WITH DM 500 V8 blank screen when switched on

[total newby]

HI a friend gave me a old dm500 v8 with no power lead , i tryed my own dm 500 lead on it and it lights up but when hooked up to my tv im getting the no signal sighn i thought maybe it could have a bad flash so i tryed to use dream up to flash it and dream up cannot detect it i also tryed flash wizard and cant detect it i have set up a few dm 500s with no problems but this dm500 v8 seems dead any ideas folks could my power lead be the wrong polarity or something its a standard dm 500s lead

[birdman99]

dm

did you fix?

[total newby]

no think its toast

[psats]

no think its toast

try older version of dreamup

[total newby]

i think it must be one of those chinese it says v8 or v3 stamped onto the top case just seams totaly dead think im gona just use it as a packer for my lopsided bed

[jollyheart]

Try older version of Dreamup. It will work. I had the same problem.

[gsmtech]

it's a Dm800V8 they are good quality clones. Use DreamUp 1.3.3.4. newer versions are not clone friendly.

[total newby]

it's a Dm800V8 they are good quality clones. Use DreamUp 1.3.3.4. newer versions are not clone friendly.

hi i have tryed all versions of dreamup still no luck

[smirnoff_rules]

this is the only dreamup that works with mine ,, have u tried this one ?

[gsmtech]

Are you definitely using a null modem serial lead ? Verify you have a known working null modem serial cable.

[total newby]

yes its definetly a null modem cable, as iv flashed lots of other dm500s with it?

[total newby]

thanks but it still did not work, think this dm500 has had its days!

[nomnom]

Sounds like it could be a bootloader issue mate! You will need to Jtag the board and reflash the bootloader. I've had many like that buddy and all were down to the same problem. Cheap chinese clones.

[total newby]

Sounds like it could be a bootloader issue mate! You will need to Jtag the board and reflash the bootloader. I've had many like that buddy and all were down to the same problem. Cheap chinese clones.

cheers ill need to look into jtaging the board, as its kinda new to me, any good step by step guides and do i need to buy any cables etc

[psats]

http://www.digital-kaos.co.uk/forums/f213/jtag-repair-dreambox-11795/