Macroblocking on DLP

[Rangers484]

I just had the light engine replaced on my Samsung HLR6178w DLP tv.

The picture seems brighter, which makes sense since the bulb was over2 years old and should have dimmed some.

But I am noticing tons of macro blocking now that I never noticed before. I was watching TNT on 110 (law and order) and it was terrible. Obviously the darker the colors the worse it seems.

Any correlation between the new light engine and the macro blocking or has Dishs picture always been this bad and the dimmer bulb masked it?

 

[tigerfan33]

If you are not seeing micro blocking on other hd channels, I would not worry. TNT hd is still MPEG2 ( for the time being) and does not have the best pq.

I would check your DLP and make sure it is not in the tourched settings.

 

[Rangers484]

If you are not seeing micro blocking on other hd channels, I would not worry. TNT hd is still MPEG2 ( for the time being) and does not have the best pq.

I would check your DLP and make sure it is not in the tourched settings.

Can you explain "tourched"?

 

[tigerfan33]

Can you explain "tourched"?

Out of the box settings or store settings. When you go to a B & M store most of the hdtvs there have contrast up all the way and brightness all the way. Tone down your settings a bit and you will get a better pic.

 

[Rangers484]

Thanks for the clarification.

 

[ehren]

Dish moeg2 sucks, hopefully they are gone tomorrow.

 

[Carl B]

I recently had the light engine replaced in my Sammy DLP and the PQ was brighter, but terrible. In an AVS Forum thread for my Sammy I discovered that my result was not uncommon after a light engine replacement. The fix is a re-calibration in the service menu. Now my PQ is back to the way it was when I bought the set (I didn't mess with the gamma).

In my case, someone had posted a calibration for dummies, which I was able to follow and implement without equipment other than DVD. I'm sure my final gray scale isn't perfect, but more than adequate. I think my brightness and contrast settings are right on. The alternative is a $400 to $500 professional calibration, which doesn't make much sense given the current prices for new HDTVs.

 

[knighthammer]

I recently had the light engine replaced in my Sammy DLP and the PQ was brighter, but terrible. In an AVS Forum thread for my Sammy I discovered that my result was not uncommon after a light engine replacement. The fix is a re-calibration in the service menu. Now my PQ is back to the way it was when I bought the set (I didn't mess with the gamma).

In my case, someone had posted a calibration for dummies, which I was able to follow and implement without equipment other than DVD. I'm sure my final gray scale isn't perfect, but more than adequate. I think my brightness and contrast settings are right on. The alternative is a $400 to $500 professional calibration, which doesn't make much sense given the current prices for new HDTVs.

Any chance of posting this or a link to it? I'm going on year 3 on my original light & would like to be ready when it goes out. Also I was wondering, did your bulb go out all at once or could you tell it was going out over a period of time?

 

[Rangers484]

I recently had the light engine replaced in my Sammy DLP and the PQ was brighter, but terrible. In an AVS Forum thread for my Sammy I discovered that my result was not uncommon after a light engine replacement. The fix is a re-calibration in the service menu. Now my PQ is back to the way it was when I bought the set (I didn't mess with the gamma).

In my case, someone had posted a calibration for dummies, which I was able to follow and implement without equipment other than DVD. I'm sure my final gray scale isn't perfect, but more than adequate. I think my brightness and contrast settings are right on. The alternative is a $400 to $500 professional calibration, which doesn't make much sense given the current prices for new HDTVs.

I would also appreciate any instructions on what the settings should be. I have figured out how to get into the service menu but don't know what to change. Thanks.

 

[allargon]

I would also appreciate any instructions on what the settings should be. I have figured out how to get into the service menu but don't know what to change. Thanks.

The settings differ depending on your display and your room environment. Remember, someone living in a room painting orange will have different settings than a room painted beige who will also have different settings in a room painted white.

Here's the link you all requested.

GREYSCALE & COLOUR CALIBRATION FOR DUMMIES

 

[Carl B]

Any chance of posting this or a link to it? I'm going on year 3 on my original light & would like to be ready when it goes out. Also I was wondering, did your bulb go out all at once or could you tell it was going out over a period of time?

Replacing the lamp, a User service item, and replacing the light engine assemby, a trained service tech item, are not the same thing. Changing the lamp or lamp and ballast won't affect Service Menu settings, it will just get your light levels back up to where they were when you bought the set. The light engine includes the lamp, color wheel, mirrors, DMD board, etc. and may interact differently with the video board, thus requiring SM calibration.

Each Sammy DLP has has somewhat different service menu. Here is a link to a DIY calibration for a Sammy HLN (works for HLM also) DLP. All that is required is a DVD like Avia or DVE to provide the charts you need to set brightness, contrast, and grayscale.
Samsung DLP -N- series tweaks thread - Page 44 - AVS Forum

If you have a different Sammy DLP model I suggest you do some searching on AVS Forum for a thread that applies to you model. It is quite possible that someone developed a DIY protocol for calibrating your Sammy DLP model.

Again, the problem that the OP noted DOES NOT occur just from replacing a lamp or lamp and ballast. It is from replacement of the light engine assembly.

 

[Rangers484]

I am interested in getting the service manual for my HLR6178w. Anyone know where it can be downloaded or possibly purchased in book form?

 

[fredp]

I am interested in getting the service manual for my HLR6178w. Anyone know where it can be downloaded or possibly purchased in book form?

Googling found lots of places. Ie; Service Manual HLR6178W

 

[dewar]

On your remote for the tv press mute, 1, 8, 2, then the power button. This will give you access to your service menu. From there navigate to the index delay setting. Mine is at 46