Re: Vestel MB22+17PW15-9 (Goodmans GTVL32W26HDF)

A used eBay inverter board arrived this morning, fitted and the TV is back to normal with backlight. I'll hang on to it for a day or two to check it behaves.

The two extra caps (C834/C835) mentioned by ReeceyBurger123 also changed (happened to have some Panasonic of the correct value on hand - this almost never happens!). I also changed the two smaller ones below (C826/C840) since I also had them.

Interesting that this TV has been fairly reliable for a Vestel, but the two repairs have been to the...

Re: Vestel MB22+17PW15-9 (Goodmans GTVL32W26HDF)

Final info on this...

I cut the trace to pin 20 (Vcc) of the control IC leaving that pin isolated (see X on new pic). The voltage on the feed (left of X) then jumped up to just over 9V which is almost the 9.1V in the other thread I mentioned earlier.

Zener ZD8 is marked F4 which is also 9.1V so this is likely to be the correct supply voltage for the IC. The larger item below the Zener that I previously suggested was a regulator has a 'Q' board reference so more likely a transistor.

I'll...

Re: Vestel MB22+17PW15-9 (Goodmans GTVL32W26HDF)

> ReeceyBurger123

A few more observations. Another thread refers to a very similar Samsung inverter board:
[url]www.badcaps.net/forum/showthread.php?t=11182[/url]
Controller chip BD9882 seems hard to find in the UK but can be had for USD1.46 at Aliexpress [with a 4 week+ wait!].
I measured a few voltages on my BD9882:

Pin 11 (standby): 2.2V (if over 1.8V backlight should be on,so correct)
Pin 13 (regulator out): 3.1V (same as in other thread)
Pin 12 (under/over voltage):...

Re: Vestel MB22+17PW15-9 (Goodmans GTVL32W26HDF)

See new picture for pins.

All measurements taken with transformers in circuit.

(P1+P4 don't appear to be connected - mounting only??)
P2-P3 : 0R dead short on all 4 transformers

S1-S2 : 1K45 on all 4 transformers except top transformer=1K51
S3-S4 : 1K45 on all 4 transformers except top transformer=1K51

The additional small transformer shown in original picture Inverter-1 has primary of 30R and secondary of 32R, again mounted in circuit.

Thanks...

Goodmans GTVL32W26HDF (32" approx 2007)
Vestel MB22 chassis
PSU 17PW15-9

I had this TV for repair from a family member a few years ago with a no picture fault. It seemed OK otherwise and sound was present. I changed a few bulging capacitors on the PSU board with no fix and it turned out to be a blown SMD fuse on the TCON board (CP101). It has arrived some years later with the same fault, so off I went to the same place, but the two TCON SMD fuses (CP101/CP228) are OK.

Looking more carefully there is no backlight but the picture is there. There...

Re: New Members - please post your introductions here

A long time UK lurker has a TV to fix.

Hope you can help.