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<  Bugs  ~  Front Panel Repair

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andyfras
Posted: Fri Oct 07, 2011 4:32 pm Reply with quote
Frequent contributor Joined: 25 Jul 2005 Posts: 3457
I recently came by a faulty front panel. The remote would work occasionally, as would the front buttons. When it was not working, there was no LED indicator to confirm that a remote signal was being received.

Initially, I resoldered all the plated-through holes on the big chip, but that didn't help.

Next, I replaced the 14.7456 MHz crystal, but that didn't help either.

Finally, I replaced the IR receiver using TSOP34836 from Farnell. It was a bit fiddly removing the old one and fitting the new one (the plated-through holes were very tight), but it's working 100% now.

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mstombs
Posted: Sat Oct 08, 2011 12:17 am Reply with quote
Frequent contributor Joined: 31 Dec 2006 Posts: 938
Did you use this one?
http://uk.farnell.com/vishay/tsop34836/photodiode-ir-receiver-36khz/dp/4913127

Interesting price differential with their other arm cpc!

Just that 38kHz recently mentioned in here

http://forum.toppy.org.uk/forum/viewtopic.php?t=18961
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andyfras
Posted: Sat Oct 08, 2011 9:08 am Reply with quote
Frequent contributor Joined: 25 Jul 2005 Posts: 3457
Yes, that's the one.

I checked CPC first, but as you say, their prices were much higher for equivalent devices.

I was originally going for the Sharp version, which was cheaper:

http://uk.farnell.com/sharp/gp1ux310qs/photodiode-ir-detector/dp/1243867

but they were out of stock.

_________________
Toppy PSU repair service or capacitor kits for DIY available - PM me for details.
MyStuff 6.6 : Little Clock : MHEGOnOff : Extend : EPG2MEI : SecCache : EIT_Sub : TSSaver : Prune EPG
Channel Organiser : Tap Commander : HDD Info : PCControl : Signal Monitor : MyInfo
URC-7555 remote: TF5800 320GB 2.5", Recommended_5800.tfd + CfPePsScUUuWfZ
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MikeyP
Posted: Tue Nov 08, 2011 9:42 am Reply with quote
Frequent contributor Joined: 17 Jan 2006 Posts: 4818
I've changed a few IR sensors on the front board now

Not always the sensor itself, but poor throughplating on the sensor area, a good resoldering in the area confirms this making sure the solder bites both sides.

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