- This topic has 55 replies, 23 voices, and was last updated 6 years, 6 months ago by
.
-
Posts
-
Hello and many thanks to Biggles for his information.
The timer/clock failed on my 9200T as described.
Today I diligently followed Biggles instructions on how to clean the time clock board using standard chemists surgical spirit and a small fine brush. My guide to removing the board was an excellent YouTube video. I am a novice at this type of repair but I figured it was worth a try before buying a new card. It worked and the machine appears to function fully now. My advice is to have the video playing whilst repairing so as to be precise with every move then be patient, gentle and thorough with the cleaning process. It was surprisingly easy.
Thanks once again to Biggles for saving me money and giving me the satisfaction of repairing it myself.
Biggles – 13 hours ago »
BustersDad – 4 hours ago »
…..
My guide to removing the board was an excellent YouTube video.
…..
Is this the You Tube video you refer to? I would advise dismantling the 9200 on a table/workbench etc. not on your knees as PCRowan does. 😯
The maker of that video also doesn’t realise the ribbon cable is in a ZIF socket – there is a small latch which releases/locks the cable.
aldaweb – 1 hour ago  »Â
The maker of that video also doesn’t realise the ribbon cable is in a ZIF socket – there is a small latch which releases/locks the cable.
Whoops, I have to confess that I didn’t realise it was a ZIF socket and from JefUK’s linked article ‘Replacing the Humax PVR-9200T Clock Module’ he didn’t either. I’ve just gone down in my estimation but I can blame it on old age eyesight and recovering from a foot operation at the time. 😳 I always thought that replacing the ribbon cable was the trickiest bit of the whole procedure.
I’d just like to add that I had the same problem, and thanks to Biggles’ clear instructions I cleaned the RTC card and my Humax 9200T has been working fine for a week now.
Same problem with silver machine 8 yrs old. Followed Biggles advice using surgical spirit with great success. Biggles you’re a star – can’t imagine how you came up with the solution!
pedrox – 26 minutes ago »
can’t imagine how you came up with the solution!
I think you will find that it was a very careful and scientific investigation of the problem.
Wow, this has fixed my silver 9200T too, thanks Biggles. I used white spirit to clean the board as this was all I had available. I suspect the contamination creates some stray capacitance or current leakage that kills the oscillator, it doesn’t take much to kick a low-power crystal oscillator out of kilter.
My board has a continuous copper ground plane, not a mesh.
I’d like to add my thanks to Biggles for this one too. My 9200 has been back in working order for a week since I cleaned the board with isopropyl alcohol from an old tape head cleaning kit. I also brushed off loads of dust from the main PCB.
Thank you very much, got my humax working again for only the price of some surgical spirit!
Biggles- hats off to you. Researched this fault yesterday evening after being a bit baffled by the –.– appearing on standby. Watched PCRowan’s excellent video and got stuck in this morning. I used Isopropyl Alcohol (IPA) as it is 99+% pure. There were 2 what looked like scorch marks on the back of the PCB under the crystal/capacitor area which cleaned off easily. All back together and working perfectly. Thank you.
Bladevane – 11 hours ago  »Â
Biggles- hats off to you. Researched this fault yesterday evening after being a bit baffled by the –.– appearing on standby. Watched PCRowan’s excellent video and got stuck in this morning. I used Isopropyl Alcohol (IPA) as it is 99+% pure. There were 2 what looked like scorch marks on the back of the PCB under the crystal/capacitor area which cleaned off easily. All back together and working perfectly. Thank you.
Glad that my efforts are still proving useful. Coincidentally a secretary at work had the clock problem last week but then it started working again, she thinks it’s fixed, but it isn’t.
Are you sure they were scorch marks and not felt tip pen as I have seen, I’d worry if they were scorch marks. 😯For anyone doing the repair I would now advise using ordinary household meths as the cleaning agent available from B&Q and the like as it seems that surgical spirit can contain other stuff depending on where you buy it from. IPA, as you have used, is also going to do the job perfectly well. I will update the instructions one of these days.
I’ve just returned from holiday to find my 9200 clock has died,
I suppose it had to happen sometime.
I had this problem too and followed the advice along with the you tube video which was very useful. I used a steret(medical antiseptic wipe) – the ones they wipe your arm with before they jab you!
They are soaked in isopropyl alcohol and if you ask the pharmacist they will either give you one or sell you a few they are a couple of pence each.
The bonus is that cut into strips they work really well getting into the small places and are absorbent so soak up the nasty.
It worked! I have to admit that I didn’t feel confident about doing the job myself so I asked a friendly PC engineer (russel@desktopdirect.co). For the cost of a couple of cotton buds and a dab of surgical spirit (plus a pint for Russel) I’ve saved myself having to buy a new PVR. Be patient, the clock didn’t reset itself straightaway so I thought the fix hadn’t worked but next time I went back into the room, the clock was displaying as it should. Thanks Biggles!
- You must be logged in to reply to this topic.