Re: 17PW20 PSU problems (From Finlux 32FLD760 TV)
I'll try to get hold of a suitable resistor later today. Most likely pick one up from a store. Any specific Watts or style best, or literally any old resistor that is close?
Presumably I need to short out the wires that go to the push switch too (or leave that connected). I think it was called PL811 or something catchy like that.
I think I'm starting to agree with you that this replacement PSU is probably bad too, as it was making all sorts of clicks and buzzing last night (at one point about 4 per sec,...
emardee
Member
Last Activity: 04-12-2013, 01:56 AM
Joined: 09-16-2012
Location: Wellington
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Re: 17PW20 PSU problems (From Finlux 32FLD760 TV)
So if I need to "pull stby low" to power psu up outside the TV, what would be the easiest way to do this?
MikeLeave a comment:
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Re: 17PW20 PSU problems (From Finlux 32FLD760 TV)
It was "refurbished". Clear signs of solder work, and claims to have been "upgraded" in its components to fix the common faults.
The low volts on original was why I bought myself a replacement. I'm hoping the replacement isn't at fault, although if it is, I'll just have to bite the postage and ship it back to the UK. What makes you think this one is faulty too? Something I already posted? Or just the scenario?
The other possibility is that there are two different faults. The original...Leave a comment:
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Re: 17PW20 PSU problems (From Finlux 32FLD760 TV)
Oh. I just tried it again in the TV, and it has powered on and stayed on .
Will record some voltage readings off the replacement psu whilst it is working:
Voltage on C819 = 389V when on.
Then on the socket pins (from left to right)
PL801:
n/c
n/c
n/c
24v0
24v0
GND
GND
n/c
n/c
n/c
PL802:
24v0
24v0
24v0
24v0
GND
GND
GND
n/c
n/c
2v4
2v8
...Leave a comment:
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Re: 17PW20 PSU problems (From Finlux 32FLD760 TV)
Thanks Vince. I've already read that one to the end before I posted here!
I kept thinking the thread would reveal a big clue to my own problem, but that missing info seemed elusive.... although now I have Tom from that thread over in my thread, maybe his wisdom will shed some light here!
Mike...Leave a comment:
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Re: 17PW20 PSU problems (From Finlux 32FLD760 TV)
Tom,
Thanks for the reply. I had already read [URL="https://www.badcaps.net/forum/showthread.php?t=15313"]all 6 pages of this thread of yours[/URL] about a Goodmans TV which was based on the same psu & mainboard as mine.
This Finlux was brought over to NZ from the UK and as you say Vestel don't appear to be sold over here. Hence no spares available, which is why I bought the psu board on ebay from the UK.
Thanks for the schematic for the 17PW20v1. I just looked again at the...Leave a comment:
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17PW20 PSU problems (From Finlux 32FLD760 TV)
Hi,
I have been having intermittent problems with a Finlux 32FLD760 TV, which uses the Vestel 17MB22-2 mainboard with 17PW20v1 PSU.
Thinking it was the power supply at fault because the run voltages were a bit low (although standby volts were spot on), I bought a reconditioned 17PW20v1 off ebay (although they actually sent me a 17PW20v2 but I think this should be OK?)
However the TV still doesn't power on correctly and unfortunately it powers off again too quick to get reliable main voltage readings (other than the standby voltages which are spot on... -
Re: esr or cap tester
Thanks.
I haven't been able to find any review of this unit. I'm guessing the unit is too new to have been reviewed yet. It looks like it has a data logging feature over USB to a computer, but it is all a bit vague.
My immediately need is to be able to get a way to test ESR, hence reading the whole of this thread, and posting here.
I already have a reasonable DMM (with Analogue needle too!), which has Capacitor test, frequency test, resistance, voltage etc. So some of these features will be duplicated for me, but...Leave a comment:
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Re: esr or cap tester
Hi,
Has anyone got any experience of a device like this one?
[url]http://r.ebay.com/IN5GZx[/url]
(UNI-T T612 listed on ebay)
It supposedly tests a whole load of stuff (says it does: L/C/R/DCR/Q/D/θ/ESR), not just ESR, but not sure if it is worthwhile or not. Does it work well? Is it good value for money compared to separate devices?
Thanks
MikeRe: esr or cap tester<br /> <br /> ...m/IN5GZx[/url]Leave a comment:
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Re: New Members - please post your introductions here
Hi
Like many of you I can't stand things being thrown in landfill tip just for the sake of a simple component replacement worth a couple of dollars! I've fixed TVs, monitors, laptops, power supplies, motherboards and various small things, just by following my nose and intuition.
I tend to start where the obvious bulging capacitors are! I also look for tell tale burnt marks! And a quick google too! I have enough electronics theory to be dangerous at the moment rather than being useful... but most...Leave a comment:
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Re: Vestel 17PW20 intermittent backlight
Shikuru,
I was wondering if you ever fixed this problem? What was the cause? Was it the PSU or the inverter in the end?
I have a Finlux 32FLD760 with similar-ish problems (uses the same 17PW20v1 PSU).
I was just coming to the conclusion that I should probably get a replacement refurbished 17PW20v1 board from ebay, but reading your post made me concerned that it was possibly my inverter at fault instead, and that I could find it still didn't work even with a replacement perfect PSU in place....Leave a comment:
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