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Korean Cortina

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1161 replies to this topic

#1141 OFFLINE   mat_the_cat

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Posted 03 March 2019 - 08:54 PM

I'm happy with the audio set up I've installed, with one exception! That is the brightness of the display. It's deteriorated so much that I can't read it in daylight, let alone sunlight. Problem is, I've yet to find a replacement that I'd want to fit.

 

So I've been collecting spare head units, and even more front panels - but have come to the conclusion that it's not just a usage-related failure, but age as well.

 

20190303_184851.jpg

 

Even NOS units (which I guess may have still been lightly used) are no better :-( So I've been researching into the type of display, and I'm going to have a go at fixing it! It's fallen out of favour now LEDs are everywhere, as it requires a high voltage to run it, and fades over time and also with exposure to humidity. So a damp garage isn't going to do it any favours...

 

http://edisontechcen...uminescent.html

 

I've ordered what should be a suitable sheet of EL material from SIngapore, so once that arrives I'll have to disassemble the LCD display and try to replace the backlight. Wish me luck!


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#1142 OFFLINE   Zelandeth

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Posted 03 March 2019 - 11:34 PM

Interesting, quite surprised to see an EL backlight in there. It must be driven quite hard to give a usable brightness level with a negative LCD like that.

I assume it's not practical to retrofit an LED backlight?
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#1143 OFFLINE   mat_the_cat

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Posted 04 March 2019 - 11:35 PM

I've not yet measured it, but the warning in the manual suggests ~200 Vac which seems to be higher than is common.

 

Hadn't considered LED illumination, but will have a crack at replacing the EL sheet first - at least I have a few spares to practice on!



#1144 OFFLINE   mat_the_cat

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Posted 09 March 2019 - 11:00 PM

Today I planned to attend the Hubnut meet over in Stoke on Trent. All went well until 50 miles into my journey.

 

20190309_134325.jpg

 

Approaching a roundabout, started to pull away and the engine died. Tried restarting and nothing :-( A quick check showed fuel was getting through so an electrical issue seemed most likely.

 

I was most pleased and surprised when a friendly trucker pulled over, parked behind me as a shield, pushed the car to a safer place, and then helped me fix it by watching for a spark while I turned the key. First we established that there was none at the plugs, and then none at the king lead. However on pulling out the king lead it fell apart, so I obviously thought I'd found the fault. Managed to bodge that back together but still nothing, so I was doubtful of my repair until I measured the voltage at the coil. Nothing!

 

Grabbed a temporary test lead with croc clips at each end, and powered the coild direct from the main positive terminal, and STILL no spark! Turned out the test lead had broken internally - started to think fate wasn't on my side at that point! A bit more investigation showed that the ballast resistor had failed, but as this alone would have at least let the engine run on cranking, it must mean that the direct feed from the starter solenoid has also failed in the past.

 

I rigged up a temporary wire to bypass the resistor, giving 12V to the coil at all times.

 

20190309_211043.jpg

 

This had the risk of burning out the coil, so I had the choice of returning 50 miles straight home, or a 150 miles trip to the pub and back home. The pub won!

 

And, I obviously made it back home OK as I'm writing this now :-) Waiting for me was a package from Singapore, which was surprisingly swift! Inside were 3 EL backlights for the head unit display.

 

20190309_221414.jpg

 

I figure I'll use one as a practice, one to fit, and one as a spare (or more practice if I mess up the first!)


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#1145 OFFLINE   mat_the_cat

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Posted 10 March 2019 - 07:43 PM

I stripped down one of my spare front panels:

 

20190310_0025031.jpg

 

20190310_0025151.jpg

 

To remove the LCD I had to straighten out the metal tabs, and lift off the display, to reveal the EL sheet below:

 

20190310_0027501.jpg

 

Ah. Bugger! The new ones are too big :-( I must have made a mistake with cross referencing part numbers. Back to the drawing board, or at least Google...


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#1146 OFFLINE   Skizzer

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Posted 10 March 2019 - 08:12 PM

Love your fixing the head unit and serial electrical / electronic diagnostic antics.

Did you mean to post the pic with your name and address? I’d remove that if I were you, never know who’s watching.
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#1147 OFFLINE   dollywobbler

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Posted 10 March 2019 - 08:12 PM

Glad you made it safely home. I was sitting in the C15 and waited for you to drive off before starting the engine. That noise...


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#1148 OFFLINE   mat_the_cat

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Posted 10 March 2019 - 08:58 PM

Did you mean to post the pic with your name and address? I’d remove that if I were you, never know who’s watching.

 

I did mean to, as it was mildly exciting to get an item posted to me from the other side of the world! But I've removed it now, for safety. I might be being naive, but does anyone know exactly what could someone do with knowing my name and address, which they could do from the electoral register anyway (although I've obviously saved them the trouble!)?


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#1149 ONLINE   beko1987

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Posted 10 March 2019 - 09:00 PM

They could come round and fix your car, the BASTARDS!

 

I would but you live very far away, sorry!


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#1150 OFFLINE   Skizzer

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Posted 10 March 2019 - 09:23 PM

I did mean to, as it was mildly exciting to get an item posted to me from the other side of the world! But I've removed it now, for safety. I might be being naive, but does anyone know exactly what could someone do with knowing my name and address, which they could do from the electoral register anyway (although I've obviously saved them the trouble!)?

 

Come round and nick your lovely Stellar or LT35, mainly! 

 

Granted there are more obvious ways in which we expose ourselves to identity theft - my home address and annual earnings (until a couple of years ago) are there for the world to see on the Companies House website, for instance - but there's no point in making it any easier. 


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#1151 OFFLINE   mat_the_cat

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Posted 10 March 2019 - 09:41 PM

I'm not sure I'd make a very effective criminal, as I hadn't even considered targeted vehicle thefts :oops: That said, Tesco drivers seem to find it hard enough to find the house even when given a detailed description with the address, so I'm hopefully reasonably safe...


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#1152 OFFLINE   mrbenn

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Posted 10 March 2019 - 10:35 PM

Haven't you got a dog the size of a small horse, too? I imagine that would be a reasonable "deterrent" :shock:


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#1153 OFFLINE   PhilA

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Posted 11 March 2019 - 02:46 PM

Nice. I had one of those head units, and it did the same thing with the display. It did have many many hours on it though.

Damn good radio.

Phil
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#1154 OFFLINE   mat_the_cat

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Posted 11 March 2019 - 08:09 PM

Haven't you got a dog the size of a small horse, too? I imagine that would be a reasonable "deterrent" :shock:

 

Yes, we have a really vicious Dobermann who will bite your hand off fall asleep on your hand:

 

20171001_130342.jpg

 

Nice. I had one of those head units, and it did the same thing with the display. It did have many many hours on it though.

Damn good radio.

Phil

 

I think I've found the correct part now, but for one of them it's twice what I paid for three! So if I go for that I won't get the chance to practice first...


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#1155 OFFLINE   mat_the_cat

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Posted 13 March 2019 - 11:11 PM

The resistor arrived today, and was duly fitted. A simple job, made more difficult by a sheared off coil fixing screw.

 

20190313_192433.jpg

 

I also thought it wise to protect the fuel filter slightly from direct heat from the exhaust manifold, so I folded up a heat shield from a piece of stainless sheet, and screwed it in place.

 

20190313_193305.jpg

 

A couple of satisfying jobs complete!


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#1156 OFFLINE   mat_the_cat

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Posted 14 March 2019 - 11:22 PM

Next job is a bit of tarting up. The headlining in this is quite literally hanging!

 

20190314_230548.jpg

 

You can see where I tried to reattach it a few years ago with contact adhesive, which only made it look about 10 times worse. So I've been keeping half an eye out for some suitable material. I've ended up going back to the upholsterers who did the seats in the LT, who sent me samples of the most likely materials:

 

20190314_230608.jpg

 

Comparing them I have a choice between a close colour match (at least for the clean areas!) with a similar but finer pattern, or a similarly sized pattern but a darker fabric in the weave.

 

20190314_230734.jpg

 

Not sure what to go for really - I probably shouldn't care too much about originality but I'm leaning more towards the lighter one as the closest to original. Any thoughts welcome...



#1157 OFFLINE   paulplom

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Posted 15 March 2019 - 04:16 AM

The darker one may make the cabin a bit gloomy.


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#1158 OFFLINE   mat_the_cat

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Posted 16 March 2019 - 09:57 PM

I reckon you're right - everything else is grey so probably best to not overdo it! That's now on order anyway.

 

Annoyingly I snagged the front number plate with my holed trousers the other day, and cracked it so will have to fit a new one. I've noticed there's less choice than there used to be of sellers doing pre-2001 fonts, although still available. Fancy Plates seem decent quality so have ordered some. I was half tempted by some raised digit plates, but from what I remember of the time everything was smooth perspex.



#1159 OFFLINE   Pillock

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Posted 16 March 2019 - 10:15 PM

I thought you could just cut EL panels with a knife? 



#1160 OFFLINE   mat_the_cat

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Posted 16 March 2019 - 10:23 PM

Some you can, others have a conductive track encircling the illuminated area, and therefore can't. If I can find a cuttable sheet which will work on the voltage this is running on then happy days :-)



#1161 ONLINE   LightBulbFun

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Posted 16 March 2019 - 10:27 PM

paint your own? :)

 



#1162 OFFLINE   mat_the_cat

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Posted Yesterday, 09:46 PM

Well, I think I found the problem with the ballast resistor!

 

20190317_162708.jpg

 

The coil of resistance wire was encased in some kind of potting material, so I chipped that away to take a look. The wire had simply corroded through. Oh well, as far as I know it's original to the car so not bad going.

 

The source I thought I had for an EL backlight is a dead-end, which may be a blessing in disguise. After a bit more research I've found somewhere who may do what I need:

 

https://elpanelandta.../el-backlights/

 

With a bit of luck it may be a standard size, but if not these are trimmable. Just need to measure the voltage and frequency, to see if it's suitable :-)


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