Hyper Module Problems

**lcaillo** · **12-17-08, 07:48 PM**

The hyper module is responsible for scan conversion in many Toshiba sets. Some of the CRT RPTVs have had issues with bad capacitors in the Hyper Module. There is a service bulletin that suggests replacing all of the 10uF surface mount electrolytics in several models. The symptom is usually what looks like a loss of sync, or zig-zag distortion in the image. It may be in one resolution and not another. It can sometimes make the set look like it has a convergence problem. In some sets, there is also a problem with the crystal resonators needing to be resoldered on the Hyper Module.

I have found that in addition to the problems with the 10uF caps, there are usually more bad surface mount electrolytics in the Hyper Module. I suggest ESR testing all of them and replacing all of the 10uF caps and any that test bad.

As an example, this is the list of capacitors that I replaced in one 65H82 in the Hyper Module:
(some caps shared the same label so location includes direction from label on board)

10uF 16V
CZ52, C514, CX270, CX261, CX178, CX221, CX230, CX250, CX670, CX541, CX241

2.2uF 50V
C404, C315, CY42, CY44

22uF 50V
CX137, CX127, CX117, CX133, CX176 (right of label), CX176 (right and below label)

100uF 16V
CV501, RZ68, CZ207, CX174, CX176 (directly below label)

1uF
CX173

Other sets have had different capacitors that have tested high in ESR. I do not recommend wholesale replacement, as many are good and it is very easy to damage the board even when using great care in removing the caps. The traces on some are not well bonded to the board. I recommend testing with an ESR tester and changing all of the ones that are bad, along with all of the 10uF caps.

**Gadzie** · **10-19-09, 01:14 PM**

lcaillo,

After extensively going over my service manual material, I have found no 10 uf electrolytic capacitors on this board. I, however, have found 10 pf caps based on the manufacturer's specs. Can you or someone verify that these are uf and not pf caps? Even putting the part number in for a google search, encompass calls them uf caps which worries me a bit.

**lcaillo** · **10-19-09, 01:31 PM**

I am not sure what to say. The location numbers are listed above, and they are clearly labelled on the caps as well as in the schematic.

**michaelt** · **11-20-09, 03:39 PM**

Quote:

lcaillo wrote:

10uF 16V
CZ52, C514, CX270, CX261, CX178, CX221, CX230, CX250, CX670, CX541, CX241

Quote:

lcaillo wrote:

I am not sure what to say. The location numbers are listed above, and they are clearly labelled on the caps as well as in the schematic.

I will second Gadzie's concern but lcaillo observations (& reputation) seems to be correct.

My 57HX81 Service Manual (50H81, TAC0151, file No. 020-200109) also lists all of these caps as:

CX221 P#24619040 Chip, 10pF, ±20%, 16V

BUT all references online list that part# as:

CAP.,16v-10mfd CHIP

Is this just a Toshiba part description typo that went uncorrected and filtered through all their docs?
A quick check of the DigiKey smd caps indicates no 16v values lower than 10uf so the "10pf" appears to be an error (and I have never heard of a 10pf electrolytic).

I do not have the schematic and can not comment on that.

This does make me very cautious about repairing this board.

I have not pulled the board yet.
If & when I do, I'll update this as to what I see and measure.

**Gadzie** · **11-20-09, 05:39 PM**

lol.. No wonder why they aren't making the board any more..

**lcaillo** · **11-20-09, 09:38 PM**

pF is simply a mistake. The caps are in the uF range.

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