Author Topic: KIMI 3 - Series 3 FB  (Read 2290 times)

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #30 on: March 20, 2020, 09:58:53 PM »
Firstly it looked like the FM tuner module was the source of the issue - the silver, metal screened unit with the label. I tapped it and FM started to work  :icon_thumleft:



RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #31 on: March 20, 2020, 10:05:50 PM »
That was short lived though, as FM stopped working a few minute later, but at least the signs pointed to a faulty connection somewhere, but where?

The circuit diagrams helped, as they showed there should be a 8 volt supply to the FM Module when FM was selected. But there was no 8 volts on the input to the module. I traced back the primary source of the power feed to an integrated circuit, outputting 12 volts on pin 5. Yep, that was fine. Next, that fed a an NPN transistor being used to drop the voltage to 8 volts,. As soon as I put my multimeter probe on the one of the pins to that transistor, FM started to work again  :13:

Here is a photo of the 3 pins to the NPN transistor. You can see the left pin has a black void, showing a compromised solder joint.

The other solder joints don't look too brilliant either!
RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #32 on: March 20, 2020, 10:07:29 PM »
So, out with the miniature soldering iron and a bit of re -flowing with fresh solder - much better!
RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #33 on: March 20, 2020, 10:11:33 PM »
FM now solid as a rock  :great:

Whilst re-assembling - a painful job, I think a masochist designed the casing - I decided to dismantle the front panel and use some cotton buds and cleaning solution to remove 35 years worth of grime:


RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #34 on: March 20, 2020, 10:14:36 PM »
4 cotton buds later and the panel, buttons and controls were looking a lot better.

I also realised this unit had the rather cool green LED sound level indicators when playing tapes  :great:



RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #35 on: March 20, 2020, 10:15:13 PM »
I just have to wrestle it back into the dash now  ;)
RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

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Re: KIMI 3 - Series 3 FB
« Reply #36 on: March 21, 2020, 05:35:16 AM »
Awesome Casey and a hugely satisfying fix.
The local tv audio repair shop has disapeared from the high street...along with that skill set!.
Hifi gone now wifi!

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Offline Jamie R

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Re: KIMI 3 - Series 3 FB
« Reply #37 on: March 21, 2020, 06:28:23 AM »
Great job, fried my noodle tho.

I’d start breaking out in a rash if I had to contemplate fixing that lol


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Offline re japi

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Re: KIMI 3 - Series 3 FB
« Reply #38 on: March 21, 2020, 08:21:33 AM »
Nice job and only way to do that. Everyone is changing stupid new sound systems for old cars...

Me however, thru Verts cd player to bin. Engine, screamer, blow off and exhaust note is enough sounds for me...

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Offline clive

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Re: KIMI 3 - Series 3 FB
« Reply #39 on: March 21, 2020, 05:34:04 PM »
Well done, you have more patiance than I  ;)

On a different note have you managed to find a UK parts list for your model ?. I am trying to help somone with a front wing and he tells me that he thinks the US version was different.   
All the best Clive

Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #40 on: March 21, 2020, 07:33:55 PM »
I've only got access to a US parts list Clive. Yes , there are differences, so have to be careful using it. Never seen a UK\Euro parts list.
RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Mr Spiller

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Re: KIMI 3 - Series 3 FB
« Reply #41 on: March 21, 2020, 09:02:03 PM »
Malcolm
Is this the car you said you would be looking at when I spoke to you at JDM last year ?


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Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #42 on: March 21, 2020, 10:14:33 PM »
Yes Wayne, I bought it the week after JDM. Ian Mothersole now has KIMI 2. KIMI 1 is still my long term resto project.
RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984

Offline Mr Spiller

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Re: KIMI 3 - Series 3 FB
« Reply #43 on: March 22, 2020, 12:18:43 PM »
It’s certainly is in very good  condition
Love it


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Offline Casey

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Re: KIMI 3 - Series 3 FB
« Reply #44 on: March 22, 2020, 12:47:24 PM »
I certainly can't complain for a 36 year old car Wayne  :great:

Shame is, plans to take it to events look like it's not going to happen for many months  :(
RX-8 230 Bridgeported: Racing Brake Disks & 4 pot front calipers,Full Racing Beat (RB) SS Exhaust system,RB ARB's F & R,RB REVI intake,Tein MonoFlex Coilovers & front strut brace.
RX-7, KIMI 1, 1st Gen S2, Silver,1983 - SORN
RX-7, KIMI 2,^^Ditto - now sold
RX-7, KIMI 3, 1st Gen S3, Red,1984