17PW15-8 & 17MB11-6 stuck in standby

[ProDave]

Goodmans 32" LCD freeview tv with Vestel 17PW15-8 PSU and Vestel 17MB11-6 main board.

Stuck in standby.  one day it just "would not turn on"

Usual failed capacitors on PSU replaced, and PSU is now outputting all correct voltages.

But the set still won't power up.

When you first turn the mains on, the PSU powers up to "on" then after about 5 seconds the PSU goes back to standby.  But the set still won't turn on. The main board is not commanding the PSU out of standby.

I'm wondering if the faulty PSU may have cooked something on the main board?

I have the service manual for PSU and main board and trying to trace wiring around IC21 on main board but it's nigh on impossible to find suitable test points.

Am I missing something obvious?

[netdent]

Dave did you change the 2 caps directly above the transformer top left? they are blue or brown 25nf

Ronnie

[ProDave]

Dave did you change the 2 caps directly above the transformer top left? they are blue or brown 25nf

Ronnie

Yes changed those.

However I seem to have found the fault (suggestion from another forum)

I've unplugged the eeprom and the set turns on, so it looks like the eeprom is corrupted.

Next step is order a new one and try it with a blank eeprom.

[fix2003]

what model number is this set may have copy of eeprom for you

[ProDave]

what model number is this set may have copy of eeprom for you

Goodmans LD3202

I've ordered a blank eeprom.

This tv eeprom business is new to me, first time I've had this as the fault.

On the basis the set now powers up and works without an eeprom inserted, I'm kind of assuming that with a blank one fitted it will just get written with default data so won't need pre programming. Is that just wishful thinking?

At the moment the set works, but all settings, analogue tuning etc are lost at switch off, but freeview tuning is remembered as that's a completely separate board with it's own memory.

[fix2003]

at the top of the post you say the set was a grundug 32 "
when asked for the model number you say its a Goodmans LD3202 
sadly not got a dump for the goodmans model

[ProDave]

at the top of the post you say the set was a grundug 32 "
when asked for the model number you say its a Goodmans LD3202  
sadly not got a dump for the goodmans model

My bad.  It's a GOODMANS LD3202, I had a senior moment when I typed Grundig (because the other set on my bench at the moment is a Grundig) I've edited the original post as well to save any more confusion.

Anyway my blank eeprom arrived today and I've fitted it, but it has made no difference (i.e set still forgets all settings after a power cycle, just like it does with no eeprom fitted)

Now excuse my ignorance as this is the first time i've had an eeprom fault on a set. I kind of hoped just plugging a blank one in and all would be well. Obviously not.

Now do I program the replacement eeprom, and in the highly likely event that I don't have the means to do it, is there a forum member willing to do it for me.

By the way another oddity of this set at the moment is the remote control is very unresponsive. It's not the remote control itself, but what happens if you press ANY button on the remote, it will do what you press, but then it won't respond to another RC command for 10 seconds

[tom66]

On RC "Menu" then 4 7 2 5 one press every 0.5 seconds (it's **very** sensitive) then reset all settings. You will then need to configure it from the default configuration as it will likely have loads of features it doesn't really have like extra video inputs and sometimes the panel setting can be incorrect causing bad colours. Good luck!

[stuckinstandby]

Hi Dave, was looking for some info on the Goodmans LD3202 and google led me here...

Would you mind checking the LCD panel that's in this? Is it QD32HL01?

I have Sagem Axium HD-L32 which uses this panel and has horizontal lines appearing. Hard to find info or spares to do any board swaps, so I was looking for other TVs which use this panel.

Original thread: Sagem Axium HD-L32 LCD - Horizontal Lines

Thanks

[ProDave]

The set's finished and gone I'm afraid so I can't check anything.

All I have left is a spare remote control for this set (it came with two for some reason)

Your fault looks like a panel fault.

[stuckinstandby]

The set's finished and gone I'm afraid so I can't check anything.

All I have left is a spare remote control for this set (it came with two for some reason)

Your fault looks like a panel fault.

Nae bother. Panel fault seems to be the consensus - horizontal lines=panel fault. I hoped that because the lines are moving it might be something else. Frustrating not being able to check anything to be certain.

I did come across a fix for the QD26HL02 panel with horizontal lines which just required 2 wires from the main board to the driver board. Was hoping there might be something similar for the 32" panel.                 

I've got a Acer 26" LCD TV which uses a QD26WL01. The PCBs look quite similar. Wonder if I could connect the QD32HL01 up to the Acer in some way - does that sound worth exploring?

Cheers