another digital speedo issue, i've done the cap and tcu fixes, help :(

[wrxkyle]

so i just did the capacitor fix Technical Articles: How to: Repair 240sx digital speedometer with HUD.) and i still don't get the speedometer or the HUD to light up at all. i did this to two different clusters i have for the car, and no dice on either of them. i think this may have been part of the problem, but not all of it, i found the other article on the burnt out tcu as well, and sure enough, it had the burnt lead, about 5 minuets(had to wait for the soldering iron to warm up)later, i had that fixed, i don't know if any components got fried but the burnt lead is fixed.problem is, before finding that article online i went to touch up my soldering job, and probably unfixed the speedo unit after it was working :

so now i'm looking for someone with a working speedo unit and tcu that i could meet and figure out which is the problem, or if both/neither are.

oh i just bought myself the 240 as an early birthday present and to keep the wrx company, i'll post some pix in what ever new to the forums thread there is.

oh, sr20det conversion with central 20 racing spl ecu brain. digital hud and speedo. thanks all!!!!(i posted at zilvia and not a single peep from anyone, i hope i get some answers here, is there any way to bench test the speedo?)

tach works, all other gauges work, even the odo works, which is hooked to the speedo unit . i get no cluster lighting exept for the wrning lights/seatbelt, ect...
Modified by wrxkyle at 7:09 PM 10/21/2009

[wrxkyle]

bump, anyone? anyone? whats the black box behind the tcu? could that have an issue that's causing this?

fixed it, turns out on top of me ruining one speedo with my crappy soldering, and the tcu having the burnt out trace, and the power supply being dead on the speedo i didn't ruin soldering(i swapped the power off the back of the two), a fuse was mission, for the radio, which is also linked to the tcu man i feel stupid, taking out the whole dash and everything when i didn't have to at all : :

Modified by wrxkyle at 7:46 PM 10/24/2009

Modified by wrxkyle at 7:46 PM 10/24/2009
Modified by wrxkyle at 8:30 PM 10/24/2009

[wrxkyle]

edit: almost fixed it, the dash lights don't come on at night, but the clock light in the dash is lit when the headlights are off, any help on what that could be now that the speedo, hud, and tcu should be working right?

[AZhitman]

Hey Kyle - Hold tight, I'm researching it for you.

The only thing worse than getting NO response is getting the wrong response!

[wrxkyle]

hey so i think that it's the connector, or maybe a connection on the board needs to be re flowed, i really don't want to take the dang thing out again but when i push on the wire harness it lights up, and with vibration it will go out and come on. corroded wiring? is that possible on a non flooded car in Utah? any chemicals that will clean and promote a good connection?